Split internal interface activities from current AM interface (3/n)

3rd step in unifying the window hierarchy that is currently split
within AM and WM packages. We separate the the internal interface used
to communicate within system server dealing with activities and their
containers (tasks, stack, display) from the rest of AM internal
interface.

Test: Existing tests pass
Test: go/wm-smoke-auto
Bug: 80414790
Change-Id: Idad77721c1fe10621b9be5dced42a0a11f0183e5
diff --git a/services/core/java/com/android/server/DeviceIdleController.java b/services/core/java/com/android/server/DeviceIdleController.java
index b8f395b..4e700d7 100644
--- a/services/core/java/com/android/server/DeviceIdleController.java
+++ b/services/core/java/com/android/server/DeviceIdleController.java
@@ -19,6 +19,7 @@
 import android.Manifest;
 import android.app.ActivityManager;
 import android.app.ActivityManagerInternal;
+import android.app.ActivityTaskManagerInternal;
 import android.app.AlarmManager;
 import android.content.BroadcastReceiver;
 import android.content.ContentResolver;
@@ -82,7 +83,6 @@
 import com.android.internal.os.BackgroundThread;
 import com.android.internal.util.DumpUtils;
 import com.android.internal.util.FastXmlSerializer;
-import com.android.internal.util.Preconditions;
 import com.android.internal.util.XmlUtils;
 import com.android.server.am.BatteryStatsService;
 import com.android.server.net.NetworkPolicyManagerInternal;
@@ -118,6 +118,7 @@
     private AlarmManager mAlarmManager;
     private IBatteryStats mBatteryStats;
     private ActivityManagerInternal mLocalActivityManager;
+    private ActivityTaskManagerInternal mLocalActivityTaskManager;
     private PowerManagerInternal mLocalPowerManager;
     private PowerManager mPowerManager;
     private ConnectivityService mConnectivityService;
@@ -1359,8 +1360,8 @@
         }
     }
 
-    private ActivityManagerInternal.ScreenObserver mScreenObserver =
-            new ActivityManagerInternal.ScreenObserver() {
+    private ActivityTaskManagerInternal.ScreenObserver mScreenObserver =
+            new ActivityTaskManagerInternal.ScreenObserver() {
                 @Override
                 public void onAwakeStateChanged(boolean isAwake) { }
 
@@ -1461,6 +1462,7 @@
                 mAlarmManager = (AlarmManager) getContext().getSystemService(Context.ALARM_SERVICE);
                 mBatteryStats = BatteryStatsService.getService();
                 mLocalActivityManager = getLocalService(ActivityManagerInternal.class);
+                mLocalActivityTaskManager = getLocalService(ActivityTaskManagerInternal.class);
                 mLocalPowerManager = getLocalService(PowerManagerInternal.class);
                 mPowerManager = getContext().getSystemService(PowerManager.class);
                 mActiveIdleWakeLock = mPowerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
@@ -1539,7 +1541,7 @@
                         mPowerSaveWhitelistAllAppIdArray, mPowerSaveWhitelistExceptIdleAppIdArray);
                 mLocalPowerManager.setDeviceIdleWhitelist(mPowerSaveWhitelistAllAppIdArray);
 
-                mLocalActivityManager.registerScreenObserver(mScreenObserver);
+                mLocalActivityTaskManager.registerScreenObserver(mScreenObserver);
 
                 passWhiteListsToForceAppStandbyTrackerLocked();
                 updateInteractivityLocked();
diff --git a/services/core/java/com/android/server/StorageManagerService.java b/services/core/java/com/android/server/StorageManagerService.java
index 2deb759..d025a87 100644
--- a/services/core/java/com/android/server/StorageManagerService.java
+++ b/services/core/java/com/android/server/StorageManagerService.java
@@ -39,7 +39,8 @@
 import android.annotation.Nullable;
 import android.app.ActivityManager;
 import android.app.ActivityManagerInternal;
-import android.app.ActivityManagerInternal.ScreenObserver;
+import android.app.ActivityTaskManagerInternal;
+import android.app.ActivityTaskManagerInternal.ScreenObserver;
 import android.app.AppOpsManager;
 import android.app.IActivityManager;
 import android.app.KeyguardManager;
@@ -1511,7 +1512,7 @@
     }
 
     private void systemReady() {
-        LocalServices.getService(ActivityManagerInternal.class)
+        LocalServices.getService(ActivityTaskManagerInternal.class)
                 .registerScreenObserver(this);
 
         mSystemReady = true;
diff --git a/services/core/java/com/android/server/am/ActivityDisplay.java b/services/core/java/com/android/server/am/ActivityDisplay.java
index 698b6f7..b2707e7 100644
--- a/services/core/java/com/android/server/am/ActivityDisplay.java
+++ b/services/core/java/com/android/server/am/ActivityDisplay.java
@@ -39,8 +39,8 @@
 import static com.android.server.am.ActivityDisplayProto.ID;
 
 import android.annotation.Nullable;
-import android.app.ActivityManagerInternal;
 import android.app.ActivityOptions;
+import android.app.ActivityTaskManagerInternal;
 import android.app.WindowConfiguration;
 import android.graphics.Point;
 import android.util.IntArray;
@@ -90,9 +90,9 @@
     private IntArray mDisplayAccessUIDs = new IntArray();
 
     /** All tokens used to put activities on this stack to sleep (including mOffToken) */
-    final ArrayList<ActivityManagerInternal.SleepToken> mAllSleepTokens = new ArrayList<>();
+    final ArrayList<ActivityTaskManagerInternal.SleepToken> mAllSleepTokens = new ArrayList<>();
     /** The token acquired by ActivityStackSupervisor to put stacks on the display to sleep */
-    ActivityManagerInternal.SleepToken mOffToken;
+    ActivityTaskManagerInternal.SleepToken mOffToken;
 
     private boolean mSleeping;
 
diff --git a/services/core/java/com/android/server/am/ActivityManagerService.java b/services/core/java/com/android/server/am/ActivityManagerService.java
index 3a1a1ce..77826d4 100644
--- a/services/core/java/com/android/server/am/ActivityManagerService.java
+++ b/services/core/java/com/android/server/am/ActivityManagerService.java
@@ -16,35 +16,17 @@
 
 package com.android.server.am;
 
-import static android.Manifest.permission.BIND_VOICE_INTERACTION;
 import static android.Manifest.permission.CHANGE_CONFIGURATION;
 import static android.Manifest.permission.CHANGE_DEVICE_IDLE_TEMP_WHITELIST;
-import static android.Manifest.permission.CONTROL_REMOTE_APP_TRANSITION_ANIMATIONS;
 import static android.Manifest.permission.INTERACT_ACROSS_USERS;
 import static android.Manifest.permission.INTERACT_ACROSS_USERS_FULL;
-import static android.Manifest.permission.INTERNAL_SYSTEM_WINDOW;
 import static android.Manifest.permission.MANAGE_ACTIVITY_STACKS;
-import static android.Manifest.permission.READ_FRAME_BUFFER;
 import static android.Manifest.permission.REMOVE_TASKS;
-import static android.Manifest.permission.START_TASKS_FROM_RECENTS;
 import static android.Manifest.permission.STOP_APP_SWITCHES;
-import static android.app.ActivityManager.LOCK_TASK_MODE_NONE;
-import static android.app.ActivityTaskManager.RESIZE_MODE_PRESERVE_WINDOW;
-import static android.app.ActivityTaskManager.INVALID_STACK_ID;
-import static android.app.ActivityManagerInternal.ASSIST_KEY_CONTENT;
-import static android.app.ActivityManagerInternal.ASSIST_KEY_DATA;
-import static android.app.ActivityManagerInternal.ASSIST_KEY_RECEIVER_EXTRAS;
-import static android.app.ActivityManagerInternal.ASSIST_KEY_STRUCTURE;
 import static android.app.ActivityThread.PROC_START_SEQ_IDENT;
 import static android.app.AppOpsManager.OP_NONE;
-import static android.app.WindowConfiguration.ACTIVITY_TYPE_STANDARD;
-import static android.app.WindowConfiguration.ACTIVITY_TYPE_UNDEFINED;
-import static android.app.WindowConfiguration.WINDOWING_MODE_FREEFORM;
 import static android.app.WindowConfiguration.WINDOWING_MODE_FULLSCREEN;
-import static android.app.WindowConfiguration.WINDOWING_MODE_FULLSCREEN_OR_SPLIT_SCREEN_SECONDARY;
 import static android.app.WindowConfiguration.WINDOWING_MODE_PINNED;
-import static android.app.WindowConfiguration.WINDOWING_MODE_SPLIT_SCREEN_SECONDARY;
-import static android.app.WindowConfiguration.WINDOWING_MODE_UNDEFINED;
 import static android.content.Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS;
 import static android.content.Intent.FLAG_ACTIVITY_NEW_TASK;
 import static android.content.Intent.FLAG_ACTIVITY_TASK_ON_HOME;
@@ -120,7 +102,6 @@
 import static android.provider.Settings.Global.NETWORK_ACCESS_TIMEOUT_MS;
 import static android.provider.Settings.Global.WAIT_FOR_DEBUGGER;
 import static android.provider.Settings.System.FONT_SCALE;
-import static android.service.voice.VoiceInteractionSession.SHOW_SOURCE_APPLICATION;
 import static android.text.format.DateUtils.DAY_IN_MILLIS;
 import static android.view.Display.DEFAULT_DISPLAY;
 import static android.view.Display.INVALID_DISPLAY;
@@ -139,7 +120,6 @@
 import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_BROADCAST_LIGHT;
 import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_CLEANUP;
 import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_CONFIGURATION;
-import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_FOCUS;
 import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_IMMERSIVE;
 import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_LOCKTASK;
 import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_LRU;
@@ -160,7 +140,6 @@
 import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_UID_OBSERVERS;
 import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_URI_PERMISSION;
 import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_USAGE_STATS;
-import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_VISIBILITY;
 import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_WHITELISTS;
 import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_BACKUP;
 import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_BROADCAST;
@@ -187,26 +166,13 @@
 import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_VISIBILITY;
 import static com.android.server.am.ActivityManagerDebugConfig.TAG_AM;
 import static com.android.server.am.ActivityManagerDebugConfig.TAG_WITH_CLASS_NAME;
-import static com.android.server.am.ActivityStack.REMOVE_TASK_MODE_DESTROYING;
-import static com.android.server.am.ActivityStackSupervisor.DEFER_RESUME;
-import static com.android.server.am.ActivityStackSupervisor.MATCH_TASK_IN_STACKS_ONLY;
-import static com.android.server.am.ActivityStackSupervisor.MATCH_TASK_IN_STACKS_OR_RECENT_TASKS;
-import static com.android.server.am.ActivityStackSupervisor.ON_TOP;
 import static com.android.server.am.ActivityStackSupervisor.PRESERVE_WINDOWS;
-import static com.android.server.am.ActivityStackSupervisor.REMOVE_FROM_RECENTS;
 import static com.android.server.am.MemoryStatUtil.readMemoryStatFromFilesystem;
 import static com.android.server.am.MemoryStatUtil.hasMemcg;
-import static com.android.server.am.TaskRecord.INVALID_TASK_ID;
-import static com.android.server.am.TaskRecord.LOCK_TASK_AUTH_DONT_LOCK;
-import static com.android.server.am.TaskRecord.REPARENT_KEEP_STACK_AT_FRONT;
-import static com.android.server.am.TaskRecord.REPARENT_LEAVE_STACK_IN_PLACE;
 import static android.view.WindowManager.TRANSIT_ACTIVITY_OPEN;
 import static android.view.WindowManager.TRANSIT_NONE;
-import static android.view.WindowManager.TRANSIT_TASK_IN_PLACE;
 import static android.view.WindowManager.TRANSIT_TASK_OPEN;
 import static android.view.WindowManager.TRANSIT_TASK_TO_FRONT;
-import static com.android.server.wm.RecentsAnimationController.REORDER_MOVE_TO_ORIGINAL_POSITION;
-import static com.android.server.wm.RecentsAnimationController.REORDER_KEEP_IN_PLACE;
 import static org.xmlpull.v1.XmlPullParser.END_DOCUMENT;
 import static org.xmlpull.v1.XmlPullParser.START_TAG;
 
@@ -221,8 +187,8 @@
 import android.app.ActivityManager.StackInfo;
 import android.app.ActivityManager.TaskSnapshot;
 import android.app.ActivityManagerInternal;
-import android.app.ActivityManagerInternal.ScreenObserver;
-import android.app.ActivityManagerInternal.SleepToken;
+import android.app.ActivityTaskManagerInternal.ScreenObserver;
+import android.app.ActivityTaskManagerInternal.SleepToken;
 import android.app.ActivityManagerProto;
 import android.app.ActivityOptions;
 import android.app.ActivityTaskManager;
@@ -253,22 +219,15 @@
 import android.app.Notification;
 import android.app.NotificationManager;
 import android.app.PendingIntent;
-import android.app.PictureInPictureParams;
 import android.app.ProcessMemoryState;
 import android.app.ProfilerInfo;
-import android.app.RemoteAction;
-import android.app.WaitResult;
 import android.app.WindowConfiguration.ActivityType;
 import android.app.WindowConfiguration.WindowingMode;
-import android.app.admin.DevicePolicyCache;
-import android.app.assist.AssistContent;
-import android.app.assist.AssistStructure;
 import android.app.backup.IBackupManager;
 import android.app.servertransaction.ConfigurationChangeItem;
 import android.app.usage.UsageEvents;
 import android.app.usage.UsageStatsManagerInternal;
 import android.appwidget.AppWidgetManager;
-import android.content.ActivityNotFoundException;
 import android.content.BroadcastReceiver;
 import android.content.ClipData;
 import android.content.ComponentCallbacks2;
@@ -305,13 +264,10 @@
 import android.content.res.Configuration;
 import android.content.res.Resources;
 import android.database.ContentObserver;
-import android.graphics.Bitmap;
-import android.graphics.Point;
 import android.graphics.Rect;
 import android.hardware.display.DisplayManagerInternal;
 import android.location.LocationManager;
 import android.media.audiofx.AudioEffect;
-import android.metrics.LogMaker;
 import android.net.Proxy;
 import android.net.ProxyInfo;
 import android.net.Uri;
@@ -336,7 +292,6 @@
 import android.os.Message;
 import android.os.Parcel;
 import android.os.ParcelFileDescriptor;
-import android.os.PersistableBundle;
 import android.os.PowerManager;
 import android.os.PowerManager.ServiceType;
 import android.os.PowerManagerInternal;
@@ -362,8 +317,6 @@
 import android.provider.Downloads;
 import android.provider.Settings;
 import android.service.voice.IVoiceInteractionSession;
-import android.service.voice.VoiceInteractionManagerInternal;
-import android.telecom.TelecomManager;
 import android.text.TextUtils;
 import android.text.format.DateUtils;
 import android.text.format.Time;
@@ -389,8 +342,6 @@
 import android.view.Gravity;
 import android.view.IRecentsAnimationRunner;
 import android.view.LayoutInflater;
-import android.view.RemoteAnimationAdapter;
-import android.view.RemoteAnimationDefinition;
 import android.view.View;
 import android.view.WindowManager;
 import android.view.autofill.AutofillManagerInternal;
@@ -398,7 +349,6 @@
 import com.android.internal.R;
 import com.android.internal.annotations.GuardedBy;
 import com.android.internal.annotations.VisibleForTesting;
-import com.android.internal.app.AssistUtils;
 import com.android.internal.app.DumpHeapActivity;
 import com.android.internal.app.IAppOpsCallback;
 import com.android.internal.app.IAppOpsService;
@@ -406,21 +356,16 @@
 import com.android.internal.app.ProcessMap;
 import com.android.internal.app.SystemUserHomeActivity;
 import com.android.internal.app.procstats.ProcessStats;
-import com.android.internal.logging.MetricsLogger;
-import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
 import com.android.internal.messages.nano.SystemMessageProto.SystemMessage;
 import com.android.internal.notification.SystemNotificationChannels;
 import com.android.internal.os.BackgroundThread;
 import com.android.internal.os.BatteryStatsImpl;
 import com.android.internal.os.BinderInternal;
-import com.android.internal.os.logging.MetricsLoggerWrapper;
 import com.android.internal.os.ByteTransferPipe;
 import com.android.internal.os.IResultReceiver;
 import com.android.internal.os.ProcessCpuTracker;
 import com.android.internal.os.TransferPipe;
 import com.android.internal.os.Zygote;
-import com.android.internal.policy.IKeyguardDismissCallback;
-import com.android.internal.policy.KeyguardDismissCallback;
 import com.android.internal.telephony.TelephonyIntents;
 import com.android.internal.util.ArrayUtils;
 import com.android.internal.util.DumpUtils;
@@ -467,7 +412,6 @@
 import com.android.server.pm.dex.DexManager;
 import com.android.server.utils.PriorityDump;
 import com.android.server.vr.VrManagerInternal;
-import com.android.server.wm.PinnedStackWindowController;
 import com.android.server.wm.WindowManagerService;
 
 import dalvik.system.VMRuntime;
@@ -3152,7 +3096,7 @@
         Slog.d("AppOps", "AppOpsService published");
         LocalServices.addService(ActivityManagerInternal.class, new LocalService());
         // Wait for the synchronized block started in mProcessCpuThread,
-        // so that any other acccess to mProcessCpuTracker from main thread
+        // so that any other access to mProcessCpuTracker from main thread
         // will be blocked during mProcessCpuTracker initialization.
         try {
             mProcessCpuInitLatch.await();
@@ -23466,20 +23410,6 @@
         }
 
         @Override
-        public SleepToken acquireSleepToken(String tag, int displayId) {
-            Preconditions.checkNotNull(tag);
-            return ActivityManagerService.this.acquireSleepToken(tag, displayId);
-        }
-
-        @Override
-        public ComponentName getHomeActivityForUser(int userId) {
-            synchronized (ActivityManagerService.this) {
-                ActivityRecord homeActivity = mStackSupervisor.getHomeActivityForUser(userId);
-                return homeActivity == null ? null : homeActivity.realActivity;
-            }
-        }
-
-        @Override
         public void onUserRemoved(int userId) {
             synchronized (ActivityManagerService.this) {
                 ActivityManagerService.this.onUserStoppedLocked(userId);
@@ -23489,51 +23419,6 @@
         }
 
         @Override
-        public void onLocalVoiceInteractionStarted(IBinder activity,
-                IVoiceInteractionSession voiceSession, IVoiceInteractor voiceInteractor) {
-            synchronized (ActivityManagerService.this) {
-                ActivityManagerService.this.onLocalVoiceInteractionStartedLocked(activity,
-                        voiceSession, voiceInteractor);
-            }
-        }
-
-        @Override
-        public void notifyAppTransitionStarting(SparseIntArray reasons, long timestamp) {
-            synchronized (ActivityManagerService.this) {
-                mStackSupervisor.getActivityMetricsLogger().notifyTransitionStarting(
-                        reasons, timestamp);
-            }
-        }
-
-        @Override
-        public void notifyAppTransitionFinished() {
-            synchronized (ActivityManagerService.this) {
-                mStackSupervisor.notifyAppTransitionDone();
-            }
-        }
-
-        @Override
-        public void notifyAppTransitionCancelled() {
-            synchronized (ActivityManagerService.this) {
-                mStackSupervisor.notifyAppTransitionDone();
-            }
-        }
-
-        @Override
-        public List<IBinder> getTopVisibleActivities() {
-            synchronized (ActivityManagerService.this) {
-                return mStackSupervisor.getTopVisibleActivities();
-            }
-        }
-
-        @Override
-        public void notifyDockedStackMinimizedChanged(boolean minimized) {
-            synchronized (ActivityManagerService.this) {
-                mStackSupervisor.setDockedStackMinimized(minimized);
-            }
-        }
-
-        @Override
         public void killForegroundAppsForUser(int userHandle) {
             synchronized (ActivityManagerService.this) {
                 final ArrayList<ProcessRecord> procs = new ArrayList<>();
@@ -23603,95 +23488,16 @@
         }
 
         @Override
-        public int startActivitiesAsPackage(String packageName, int userId, Intent[] intents,
-                Bundle bOptions) {
-            Preconditions.checkNotNull(intents, "intents");
-            final String[] resolvedTypes = new String[intents.length];
-
-            // UID of the package on user userId.
-            // "= 0" is needed because otherwise catch(RemoteException) would make it look like
-            // packageUid may not be initialized.
-            int packageUid = 0;
-            final long ident = Binder.clearCallingIdentity();
-
-            try {
-                for (int i = 0; i < intents.length; i++) {
-                    resolvedTypes[i] =
-                            intents[i].resolveTypeIfNeeded(mContext.getContentResolver());
-                }
-
-                packageUid = AppGlobals.getPackageManager().getPackageUid(
-                        packageName, PackageManager.MATCH_DEBUG_TRIAGED_MISSING, userId);
-            } catch (RemoteException e) {
-                // Shouldn't happen.
-            } finally {
-                Binder.restoreCallingIdentity(ident);
-            }
-
-            synchronized (ActivityManagerService.this) {
-                return mActivityStartController.startActivitiesInPackage(
-                        packageUid, packageName,
-                        intents, resolvedTypes, null /* resultTo */,
-                        SafeActivityOptions.fromBundle(bOptions), userId,
-                        false /* validateIncomingUser */);
-            }
-        }
-
-        @Override
-        public int startActivityAsUser(IApplicationThread caller, String callerPacakge,
-                Intent intent, Bundle options, int userId) {
-            return ActivityManagerService.this.mActivityTaskManager.startActivityAsUser(
-                    caller, callerPacakge, intent,
-                    intent.resolveTypeIfNeeded(mContext.getContentResolver()),
-                    null, null, 0, Intent.FLAG_ACTIVITY_NEW_TASK, null, options, userId,
-                    false /*validateIncomingUser*/);
-        }
-
-        @Override
         public int getUidProcessState(int uid) {
             return getUidState(uid);
         }
 
         @Override
-        public void notifyKeyguardFlagsChanged(@Nullable Runnable callback) {
-            synchronized (ActivityManagerService.this) {
-
-                // We might change the visibilities here, so prepare an empty app transition which
-                // might be overridden later if we actually change visibilities.
-                final boolean wasTransitionSet =
-                        mWindowManager.getPendingAppTransition() != TRANSIT_NONE;
-                if (!wasTransitionSet) {
-                    mWindowManager.prepareAppTransition(TRANSIT_NONE,
-                            false /* alwaysKeepCurrent */);
-                }
-                mStackSupervisor.ensureActivitiesVisibleLocked(null, 0, !PRESERVE_WINDOWS);
-
-                // If there was a transition set already we don't want to interfere with it as we
-                // might be starting it too early.
-                if (!wasTransitionSet) {
-                    mWindowManager.executeAppTransition();
-                }
-            }
-            if (callback != null) {
-                callback.run();
-            }
-        }
-
-        @Override
         public boolean isSystemReady() {
             // no need to synchronize(this) just to read & return the value
             return mSystemReady;
         }
 
-        @Override
-        public void notifyKeyguardTrustedChanged() {
-            synchronized (ActivityManagerService.this) {
-                if (mKeyguardController.isKeyguardShowing(DEFAULT_DISPLAY)) {
-                    mStackSupervisor.ensureActivitiesVisibleLocked(null, 0, !PRESERVE_WINDOWS);
-                }
-            }
-        }
-
         /**
          * Sets if the given pid has an overlay UI or not.
          *
@@ -23719,11 +23525,6 @@
             }
         }
 
-        @Override
-        public void setRunningRemoteAnimation(int pid, boolean runningRemoteAnimation) {
-            ActivityManagerService.this.setRunningRemoteAnimation(pid, runningRemoteAnimation);
-        }
-
         /**
          * Called after the network policy rules are updated by
          * {@link com.android.server.net.NetworkPolicyManagerService} for a specific {@param uid}
@@ -23780,22 +23581,6 @@
             }
         }
 
-        /**
-         * Called after virtual display Id is updated by
-         * {@link com.android.server.vr.Vr2dDisplay} with a specific
-         * {@param vrVr2dDisplayId}.
-         */
-        @Override
-        public void setVr2dDisplayId(int vr2dDisplayId) {
-            if (DEBUG_STACK) {
-                Slog.d(TAG, "setVr2dDisplayId called for: " +
-                        vr2dDisplayId);
-            }
-            synchronized (ActivityManagerService.this) {
-                mVr2dDisplayId = vr2dDisplayId;
-            }
-        }
-
         @Override
         public void saveANRState(String reason) {
             synchronized (ActivityManagerService.this) {
@@ -23827,21 +23612,6 @@
         }
 
         @Override
-        public void setFocusedActivity(IBinder token) {
-            synchronized (ActivityManagerService.this) {
-                final ActivityRecord r = ActivityRecord.forTokenLocked(token);
-                if (r == null) {
-                    throw new IllegalArgumentException(
-                            "setFocusedActivity: No activity record matching token=" + token);
-                }
-                if (mStackSupervisor.moveFocusableActivityStackToFrontLocked(
-                        r, "setFocusedActivity")) {
-                    mStackSupervisor.resumeFocusedStackTopActivityLocked();
-                }
-            }
-        }
-
-        @Override
         public void setAllowAppSwitches(@NonNull String type, int uid, int userId) {
             synchronized (ActivityManagerService.this) {
                 if (mUserController.isUserRunning(userId, ActivityManager.FLAG_OR_STOPPED)) {
@@ -23868,31 +23638,6 @@
         }
 
         @Override
-        public boolean hasRunningActivity(int uid, @Nullable String packageName) {
-            if (packageName == null) return false;
-
-            synchronized (ActivityManagerService.this) {
-                for (int i = 0; i < mLruProcesses.size(); i++) {
-                    final ProcessRecord processRecord = mLruProcesses.get(i);
-                    if (processRecord.uid == uid) {
-                        for (int j = 0; j < processRecord.activities.size(); j++) {
-                            final ActivityRecord activityRecord = processRecord.activities.get(j);
-                            if (packageName.equals(activityRecord.packageName)) {
-                                return true;
-                            }
-                        }
-                    }
-                }
-            }
-            return false;
-        }
-
-        @Override
-        public void registerScreenObserver(ScreenObserver observer) {
-            mScreenObservers.add(observer);
-        }
-
-        @Override
         public boolean canStartMoreUsers() {
             return mUserController.canStartMoreUsers();
         }
@@ -23913,22 +23658,6 @@
         }
 
         @Override
-        public boolean isCallerRecents(int callingUid) {
-            return getRecentTasks().isCallerRecents(callingUid);
-        }
-
-        @Override
-        public boolean isRecentsComponentHomeActivity(int userId) {
-            return getRecentTasks().isRecentsComponentHomeActivity(userId);
-        }
-
-        @Override
-        public void cancelRecentsAnimation(boolean restoreHomeStackPosition) {
-            ActivityManagerService.this.mActivityTaskManager.cancelRecentsAnimation(
-                    restoreHomeStackPosition);
-        }
-
-        @Override
         public boolean isUidActive(int uid) {
             synchronized (ActivityManagerService.this) {
                 return isUidActiveLocked(uid);
@@ -23936,6 +23665,11 @@
         }
 
         @Override
+        public void setRunningRemoteAnimation(int pid, boolean runningRemoteAnimation) {
+            ActivityManagerService.this.setRunningRemoteAnimation(pid, runningRemoteAnimation);
+        }
+
+        @Override
         public List<ProcessMemoryState> getMemoryStateForProcesses() {
             List<ProcessMemoryState> processMemoryStates = new ArrayList<>();
             synchronized (mPidsSelfLocked) {
@@ -23961,11 +23695,6 @@
             }
             return processMemoryStates;
         }
-
-        @Override
-        public void enforceCallerIsRecentsOrHasPermission(String permission, String func) {
-            ActivityManagerService.this.enforceCallerIsRecentsOrHasPermission(permission, func);
-        }
     }
 
     /**
diff --git a/services/core/java/com/android/server/am/ActivityMetricsLogger.java b/services/core/java/com/android/server/am/ActivityMetricsLogger.java
index 47d0423..9e9f638 100644
--- a/services/core/java/com/android/server/am/ActivityMetricsLogger.java
+++ b/services/core/java/com/android/server/am/ActivityMetricsLogger.java
@@ -2,7 +2,7 @@
 
 import static android.app.ActivityManager.START_SUCCESS;
 import static android.app.ActivityManager.START_TASK_TO_FRONT;
-import static android.app.ActivityManagerInternal.APP_TRANSITION_TIMEOUT;
+import static android.app.ActivityTaskManagerInternal.APP_TRANSITION_TIMEOUT;
 import static android.app.WindowConfiguration.WINDOWING_MODE_SPLIT_SCREEN_PRIMARY;
 import static android.app.WindowConfiguration.WINDOWING_MODE_FREEFORM;
 import static android.app.WindowConfiguration.WINDOWING_MODE_FULLSCREEN;
diff --git a/services/core/java/com/android/server/am/ActivityStackSupervisor.java b/services/core/java/com/android/server/am/ActivityStackSupervisor.java
index 615edd5..39b5515 100644
--- a/services/core/java/com/android/server/am/ActivityStackSupervisor.java
+++ b/services/core/java/com/android/server/am/ActivityStackSupervisor.java
@@ -51,7 +51,6 @@
 import static android.view.Display.INVALID_DISPLAY;
 import static android.view.Display.TYPE_VIRTUAL;
 
-import static com.android.internal.logging.nano.MetricsProto.MetricsEvent.ACTION_PICTURE_IN_PICTURE_EXPANDED_TO_FULLSCREEN;
 import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_ALL;
 import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_FOCUS;
 import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_IDLE;
@@ -110,7 +109,7 @@
 import android.app.ActivityManager;
 import android.app.ActivityManager.RunningTaskInfo;
 import android.app.ActivityManager.StackInfo;
-import android.app.ActivityManagerInternal.SleepToken;
+import android.app.ActivityTaskManagerInternal.SleepToken;
 import android.app.ActivityOptions;
 import android.app.AppOpsManager;
 import android.app.ProfilerInfo;
diff --git a/services/core/java/com/android/server/am/ActivityTaskManagerService.java b/services/core/java/com/android/server/am/ActivityTaskManagerService.java
index d032e1b..ab48dd2 100644
--- a/services/core/java/com/android/server/am/ActivityTaskManagerService.java
+++ b/services/core/java/com/android/server/am/ActivityTaskManagerService.java
@@ -25,10 +25,10 @@
 import static android.Manifest.permission.REMOVE_TASKS;
 import static android.Manifest.permission.START_TASKS_FROM_RECENTS;
 import static android.app.ActivityManager.LOCK_TASK_MODE_NONE;
-import static android.app.ActivityManagerInternal.ASSIST_KEY_CONTENT;
-import static android.app.ActivityManagerInternal.ASSIST_KEY_DATA;
-import static android.app.ActivityManagerInternal.ASSIST_KEY_RECEIVER_EXTRAS;
-import static android.app.ActivityManagerInternal.ASSIST_KEY_STRUCTURE;
+import static android.app.ActivityTaskManagerInternal.ASSIST_KEY_CONTENT;
+import static android.app.ActivityTaskManagerInternal.ASSIST_KEY_DATA;
+import static android.app.ActivityTaskManagerInternal.ASSIST_KEY_RECEIVER_EXTRAS;
+import static android.app.ActivityTaskManagerInternal.ASSIST_KEY_STRUCTURE;
 import static android.app.ActivityTaskManager.INVALID_STACK_ID;
 import static android.app.ActivityTaskManager.RESIZE_MODE_PRESERVE_WINDOW;
 import static android.app.ActivityTaskManager.SPLIT_SCREEN_CREATE_MODE_TOP_OR_LEFT;
@@ -46,12 +46,14 @@
 import static android.service.voice.VoiceInteractionSession.SHOW_SOURCE_APPLICATION;
 import static android.view.Display.DEFAULT_DISPLAY;
 import static android.view.Display.INVALID_DISPLAY;
+import static android.view.WindowManager.TRANSIT_NONE;
 import static android.view.WindowManager.TRANSIT_TASK_IN_PLACE;
 import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_ALL;
 import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_CONFIGURATION;
 import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_FOCUS;
 import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_IMMERSIVE;
 import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_LOCKTASK;
+import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_OOM_ADJ;
 import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_STACK;
 import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_SWITCH;
 import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_VISIBILITY;
@@ -89,6 +91,7 @@
 import android.app.ActivityManager;
 import android.app.ActivityOptions;
 import android.app.ActivityTaskManager;
+import android.app.ActivityTaskManagerInternal;
 import android.app.AppGlobals;
 import android.app.IActivityTaskManager;
 import android.app.IApplicationThread;
@@ -122,6 +125,7 @@
 import android.os.Bundle;
 import android.os.IBinder;
 import android.os.PersistableBundle;
+import android.os.Process;
 import android.os.RemoteException;
 import android.os.TransactionTooLargeException;
 import android.os.UserHandle;
@@ -132,6 +136,7 @@
 import android.text.TextUtils;
 import android.util.Slog;
 
+import android.util.SparseIntArray;
 import android.view.IRecentsAnimationRunner;
 import android.view.RemoteAnimationAdapter;
 import android.view.RemoteAnimationDefinition;
@@ -143,6 +148,7 @@
 import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
 import com.android.internal.policy.IKeyguardDismissCallback;
 import com.android.internal.policy.KeyguardDismissCallback;
+import com.android.internal.util.Preconditions;
 import com.android.server.LocalServices;
 import com.android.server.SystemService;
 import com.android.server.Watchdog;
@@ -228,6 +234,10 @@
         mStackSupervisor = mAm.mStackSupervisor;
     }
 
+    private void start() {
+        LocalServices.addService(ActivityTaskManagerInternal.class, new LocalService());
+    }
+
     public static final class Lifecycle extends SystemService {
         private final ActivityTaskManagerService mService;
 
@@ -239,6 +249,7 @@
         @Override
         public void onStart() {
             publishBinderService(Context.ACTIVITY_TASK_SERVICE, mService);
+            mService.start();
         }
 
         public ActivityTaskManagerService getService() {
@@ -3330,4 +3341,216 @@
             }
         }
     }
+
+    final class LocalService extends ActivityTaskManagerInternal {
+        @Override
+        public SleepToken acquireSleepToken(String tag, int displayId) {
+            Preconditions.checkNotNull(tag);
+            return mAm.acquireSleepToken(tag, displayId);
+        }
+
+        @Override
+        public ComponentName getHomeActivityForUser(int userId) {
+            synchronized (mGlobalLock) {
+                ActivityRecord homeActivity = mStackSupervisor.getHomeActivityForUser(userId);
+                return homeActivity == null ? null : homeActivity.realActivity;
+            }
+        }
+
+        @Override
+        public void onLocalVoiceInteractionStarted(IBinder activity,
+                IVoiceInteractionSession voiceSession, IVoiceInteractor voiceInteractor) {
+            synchronized (mGlobalLock) {
+                mAm.onLocalVoiceInteractionStartedLocked(activity, voiceSession, voiceInteractor);
+            }
+        }
+
+        @Override
+        public void notifyAppTransitionStarting(SparseIntArray reasons, long timestamp) {
+            synchronized (mGlobalLock) {
+                mStackSupervisor.getActivityMetricsLogger().notifyTransitionStarting(
+                        reasons, timestamp);
+            }
+        }
+
+        @Override
+        public void notifyAppTransitionFinished() {
+            synchronized (mGlobalLock) {
+                mStackSupervisor.notifyAppTransitionDone();
+            }
+        }
+
+        @Override
+        public void notifyAppTransitionCancelled() {
+            synchronized (mGlobalLock) {
+                mStackSupervisor.notifyAppTransitionDone();
+            }
+        }
+
+        @Override
+        public List<IBinder> getTopVisibleActivities() {
+            synchronized (mGlobalLock) {
+                return mStackSupervisor.getTopVisibleActivities();
+            }
+        }
+
+        @Override
+        public void notifyDockedStackMinimizedChanged(boolean minimized) {
+            synchronized (mGlobalLock) {
+                mStackSupervisor.setDockedStackMinimized(minimized);
+            }
+        }
+
+        @Override
+        public int startActivitiesAsPackage(String packageName, int userId, Intent[] intents,
+                Bundle bOptions) {
+            Preconditions.checkNotNull(intents, "intents");
+            final String[] resolvedTypes = new String[intents.length];
+
+            // UID of the package on user userId.
+            // "= 0" is needed because otherwise catch(RemoteException) would make it look like
+            // packageUid may not be initialized.
+            int packageUid = 0;
+            final long ident = Binder.clearCallingIdentity();
+
+            try {
+                for (int i = 0; i < intents.length; i++) {
+                    resolvedTypes[i] =
+                            intents[i].resolveTypeIfNeeded(mContext.getContentResolver());
+                }
+
+                packageUid = AppGlobals.getPackageManager().getPackageUid(
+                        packageName, PackageManager.MATCH_DEBUG_TRIAGED_MISSING, userId);
+            } catch (RemoteException e) {
+                // Shouldn't happen.
+            } finally {
+                Binder.restoreCallingIdentity(ident);
+            }
+
+            synchronized (mGlobalLock) {
+                return mAm.getActivityStartController().startActivitiesInPackage(
+                        packageUid, packageName,
+                        intents, resolvedTypes, null /* resultTo */,
+                        SafeActivityOptions.fromBundle(bOptions), userId,
+                        false /* validateIncomingUser */);
+            }
+        }
+
+        @Override
+        public int startActivityAsUser(IApplicationThread caller, String callerPacakge,
+                Intent intent, Bundle options, int userId) {
+            return ActivityTaskManagerService.this.startActivityAsUser(
+                    caller, callerPacakge, intent,
+                    intent.resolveTypeIfNeeded(mContext.getContentResolver()),
+                    null, null, 0, Intent.FLAG_ACTIVITY_NEW_TASK, null, options, userId,
+                    false /*validateIncomingUser*/);
+        }
+
+        @Override
+        public void notifyKeyguardFlagsChanged(@Nullable Runnable callback) {
+            synchronized (mGlobalLock) {
+
+                // We might change the visibilities here, so prepare an empty app transition which
+                // might be overridden later if we actually change visibilities.
+                final boolean wasTransitionSet =
+                        mAm.mWindowManager.getPendingAppTransition() != TRANSIT_NONE;
+                if (!wasTransitionSet) {
+                    mAm.mWindowManager.prepareAppTransition(TRANSIT_NONE,
+                            false /* alwaysKeepCurrent */);
+                }
+                mStackSupervisor.ensureActivitiesVisibleLocked(null, 0, !PRESERVE_WINDOWS);
+
+                // If there was a transition set already we don't want to interfere with it as we
+                // might be starting it too early.
+                if (!wasTransitionSet) {
+                    mAm.mWindowManager.executeAppTransition();
+                }
+            }
+            if (callback != null) {
+                callback.run();
+            }
+        }
+
+        @Override
+        public void notifyKeyguardTrustedChanged() {
+            synchronized (mGlobalLock) {
+                if (mAm.mKeyguardController.isKeyguardShowing(DEFAULT_DISPLAY)) {
+                    mStackSupervisor.ensureActivitiesVisibleLocked(null, 0, !PRESERVE_WINDOWS);
+                }
+            }
+        }
+
+        /**
+         * Called after virtual display Id is updated by
+         * {@link com.android.server.vr.Vr2dDisplay} with a specific
+         * {@param vrVr2dDisplayId}.
+         */
+        @Override
+        public void setVr2dDisplayId(int vr2dDisplayId) {
+            if (DEBUG_STACK) Slog.d(TAG, "setVr2dDisplayId called for: " + vr2dDisplayId);
+            synchronized (mGlobalLock) {
+                mAm.mVr2dDisplayId = vr2dDisplayId;
+            }
+        }
+
+        @Override
+        public void setFocusedActivity(IBinder token) {
+            synchronized (mGlobalLock) {
+                final ActivityRecord r = ActivityRecord.forTokenLocked(token);
+                if (r == null) {
+                    throw new IllegalArgumentException(
+                            "setFocusedActivity: No activity record matching token=" + token);
+                }
+                if (mStackSupervisor.moveFocusableActivityStackToFrontLocked(
+                        r, "setFocusedActivity")) {
+                    mStackSupervisor.resumeFocusedStackTopActivityLocked();
+                }
+            }
+        }
+
+        @Override
+        public boolean hasRunningActivity(int uid, @Nullable String packageName) {
+            if (packageName == null) return false;
+
+            synchronized (mGlobalLock) {
+                for (int i = 0; i < mAm.mLruProcesses.size(); i++) {
+                    final ProcessRecord processRecord = mAm.mLruProcesses.get(i);
+                    if (processRecord.uid == uid) {
+                        for (int j = 0; j < processRecord.activities.size(); j++) {
+                            final ActivityRecord activityRecord = processRecord.activities.get(j);
+                            if (packageName.equals(activityRecord.packageName)) {
+                                return true;
+                            }
+                        }
+                    }
+                }
+            }
+            return false;
+        }
+
+        @Override
+        public void registerScreenObserver(ScreenObserver observer) {
+            mAm.mScreenObservers.add(observer);
+        }
+
+        @Override
+        public boolean isCallerRecents(int callingUid) {
+            return mAm.getRecentTasks().isCallerRecents(callingUid);
+        }
+
+        @Override
+        public boolean isRecentsComponentHomeActivity(int userId) {
+            return mAm.getRecentTasks().isRecentsComponentHomeActivity(userId);
+        }
+
+        @Override
+        public void cancelRecentsAnimation(boolean restoreHomeStackPosition) {
+            ActivityTaskManagerService.this.cancelRecentsAnimation(restoreHomeStackPosition);
+        }
+
+        @Override
+        public void enforceCallerIsRecentsOrHasPermission(String permission, String func) {
+            mAm.enforceCallerIsRecentsOrHasPermission(permission, func);
+        }
+    }
 }
diff --git a/services/core/java/com/android/server/am/AssistDataRequester.java b/services/core/java/com/android/server/am/AssistDataRequester.java
index 14d1498..b54441a 100644
--- a/services/core/java/com/android/server/am/AssistDataRequester.java
+++ b/services/core/java/com/android/server/am/AssistDataRequester.java
@@ -17,7 +17,7 @@
 package com.android.server.am;
 
 import static android.app.ActivityManager.ASSIST_CONTEXT_FULL;
-import static android.app.ActivityManagerInternal.ASSIST_KEY_RECEIVER_EXTRAS;
+import static android.app.ActivityTaskManagerInternal.ASSIST_KEY_RECEIVER_EXTRAS;
 import static android.app.AppOpsManager.MODE_ALLOWED;
 import static android.app.AppOpsManager.OP_NONE;
 
diff --git a/services/core/java/com/android/server/am/KeyguardController.java b/services/core/java/com/android/server/am/KeyguardController.java
index 30fa72f..fb55a47 100644
--- a/services/core/java/com/android/server/am/KeyguardController.java
+++ b/services/core/java/com/android/server/am/KeyguardController.java
@@ -35,7 +35,7 @@
 import static android.view.WindowManager.TRANSIT_KEYGUARD_UNOCCLUDE;
 import static android.view.WindowManager.TRANSIT_UNSET;
 
-import android.app.ActivityManagerInternal.SleepToken;
+import android.app.ActivityTaskManagerInternal.SleepToken;
 import android.os.IBinder;
 import android.os.RemoteException;
 import android.os.Trace;
diff --git a/services/core/java/com/android/server/audio/AudioService.java b/services/core/java/com/android/server/audio/AudioService.java
index 2a5249b..cd949f5 100644
--- a/services/core/java/com/android/server/audio/AudioService.java
+++ b/services/core/java/com/android/server/audio/AudioService.java
@@ -33,6 +33,7 @@
 import android.annotation.Nullable;
 import android.app.ActivityManager;
 import android.app.ActivityManagerInternal;
+import android.app.ActivityTaskManagerInternal;
 import android.app.AppGlobals;
 import android.app.AppOpsManager;
 import android.app.IUidObserver;
@@ -6642,7 +6643,8 @@
         // when the user switches back. For managed profiles, we should kill all recording apps
         ComponentName homeActivityName = null;
         if (!oldUser.isManagedProfile()) {
-            homeActivityName = mActivityManagerInternal.getHomeActivityForUser(oldUser.id);
+            homeActivityName = LocalServices.getService(
+                    ActivityTaskManagerInternal.class).getHomeActivityForUser(oldUser.id);
         }
         final String[] permissions = { Manifest.permission.RECORD_AUDIO };
         List<PackageInfo> packages;
diff --git a/services/core/java/com/android/server/pm/CrossProfileAppsServiceImpl.java b/services/core/java/com/android/server/pm/CrossProfileAppsServiceImpl.java
index 97f6aa2..079f3ea 100644
--- a/services/core/java/com/android/server/pm/CrossProfileAppsServiceImpl.java
+++ b/services/core/java/com/android/server/pm/CrossProfileAppsServiceImpl.java
@@ -21,6 +21,7 @@
 import android.annotation.UserIdInt;
 import android.app.ActivityManagerInternal;
 import android.app.ActivityOptions;
+import android.app.ActivityTaskManagerInternal;
 import android.app.AppOpsManager;
 import android.app.IApplicationThread;
 import android.content.ComponentName;
@@ -112,7 +113,7 @@
 
         launchIntent.setPackage(null);
         launchIntent.setComponent(component);
-        mInjector.getActivityManagerInternal().startActivityAsUser(
+        mInjector.getActivityTaskManagerInternal().startActivityAsUser(
                 caller, callingPackage, launchIntent,
                 ActivityOptions.makeOpenCrossProfileAppsAnimation().toBundle(),
                 user.getIdentifier());
@@ -241,6 +242,11 @@
         public ActivityManagerInternal getActivityManagerInternal() {
             return LocalServices.getService(ActivityManagerInternal.class);
         }
+
+        @Override
+        public ActivityTaskManagerInternal getActivityTaskManagerInternal() {
+            return LocalServices.getService(ActivityTaskManagerInternal.class);
+        }
     }
 
     @VisibleForTesting
@@ -264,5 +270,7 @@
         AppOpsManager getAppOpsManager();
 
         ActivityManagerInternal getActivityManagerInternal();
+
+        ActivityTaskManagerInternal getActivityTaskManagerInternal();
     }
 }
diff --git a/services/core/java/com/android/server/pm/LauncherAppsService.java b/services/core/java/com/android/server/pm/LauncherAppsService.java
index feac8e6..a52470d 100644
--- a/services/core/java/com/android/server/pm/LauncherAppsService.java
+++ b/services/core/java/com/android/server/pm/LauncherAppsService.java
@@ -20,6 +20,7 @@
 import android.annotation.UserIdInt;
 import android.app.ActivityManager;
 import android.app.ActivityManagerInternal;
+import android.app.ActivityTaskManagerInternal;
 import android.app.AppGlobals;
 import android.app.IApplicationThread;
 import android.app.PendingIntent;
@@ -107,6 +108,7 @@
         private final UserManager mUm;
         private final UserManagerInternal mUserManagerInternal;
         private final ActivityManagerInternal mActivityManagerInternal;
+        private final ActivityTaskManagerInternal mActivityTaskManagerInternal;
         private final ShortcutServiceInternal mShortcutServiceInternal;
         private final PackageCallbackList<IOnAppsChangedListener> mListeners
                 = new PackageCallbackList<IOnAppsChangedListener>();
@@ -122,6 +124,8 @@
                     LocalServices.getService(UserManagerInternal.class));
             mActivityManagerInternal = Preconditions.checkNotNull(
                     LocalServices.getService(ActivityManagerInternal.class));
+            mActivityTaskManagerInternal = Preconditions.checkNotNull(
+                    LocalServices.getService(ActivityTaskManagerInternal.class));
             mShortcutServiceInternal = Preconditions.checkNotNull(
                     LocalServices.getService(ShortcutServiceInternal.class));
             mShortcutServiceInternal.addListener(mPackageMonitor);
@@ -521,7 +525,7 @@
                 @NonNull String publisherPackage, Bundle startActivityOptions, int userId) {
             final int code;
             try {
-                code = mActivityManagerInternal.startActivitiesAsPackage(publisherPackage,
+                code = mActivityTaskManagerInternal.startActivitiesAsPackage(publisherPackage,
                         userId, intents, startActivityOptions);
                 if (ActivityManager.isStartResultSuccessful(code)) {
                     return true; // Success
@@ -618,7 +622,7 @@
             } finally {
                 Binder.restoreCallingIdentity(ident);
             }
-            mActivityManagerInternal.startActivityAsUser(caller, callingPackage,
+            mActivityTaskManagerInternal.startActivityAsUser(caller, callingPackage,
                     launchIntent, opts, user.getIdentifier());
         }
 
@@ -641,7 +645,7 @@
             } finally {
                 Binder.restoreCallingIdentity(ident);
             }
-            mActivityManagerInternal.startActivityAsUser(caller, callingPackage,
+            mActivityTaskManagerInternal.startActivityAsUser(caller, callingPackage,
                     intent, opts, user.getIdentifier());
         }
 
diff --git a/services/core/java/com/android/server/pm/PackageManagerService.java b/services/core/java/com/android/server/pm/PackageManagerService.java
index e4567a8..e5e8648 100644
--- a/services/core/java/com/android/server/pm/PackageManagerService.java
+++ b/services/core/java/com/android/server/pm/PackageManagerService.java
@@ -123,6 +123,7 @@
 import android.annotation.UserIdInt;
 import android.app.ActivityManager;
 import android.app.ActivityManagerInternal;
+import android.app.ActivityTaskManagerInternal;
 import android.app.AppOpsManager;
 import android.app.IActivityManager;
 import android.app.ResourcesManager;
@@ -1018,6 +1019,7 @@
 
     private UserManagerInternal mUserManagerInternal;
     private ActivityManagerInternal mActivityManagerInternal;
+    private ActivityTaskManagerInternal mActivityTaskManagerInternal;
 
     private DeviceIdleController.LocalService mDeviceIdleController;
 
@@ -4767,6 +4769,13 @@
         return mActivityManagerInternal;
     }
 
+    private ActivityTaskManagerInternal getActivityTaskManagerInternal() {
+        if (mActivityTaskManagerInternal == null) {
+            mActivityTaskManagerInternal =
+                    LocalServices.getService(ActivityTaskManagerInternal.class);
+        }
+        return mActivityTaskManagerInternal;
+    }
 
     private DeviceIdleController.LocalService getDeviceIdleController() {
         if (mDeviceIdleController == null) {
@@ -4956,7 +4965,7 @@
     }
 
     private boolean isRecentsAccessingChildProfiles(int callingUid, int targetUserId) {
-        if (!getActivityManagerInternal().isCallerRecents(callingUid)) {
+        if (!getActivityTaskManagerInternal().isCallerRecents(callingUid)) {
             return false;
         }
         final long token = Binder.clearCallingIdentity();
diff --git a/services/core/java/com/android/server/policy/PhoneWindowManager.java b/services/core/java/com/android/server/policy/PhoneWindowManager.java
index 32825f7..71e342e 100644
--- a/services/core/java/com/android/server/policy/PhoneWindowManager.java
+++ b/services/core/java/com/android/server/policy/PhoneWindowManager.java
@@ -155,7 +155,8 @@
 import android.annotation.Nullable;
 import android.app.ActivityManager;
 import android.app.ActivityManagerInternal;
-import android.app.ActivityManagerInternal.SleepToken;
+import android.app.ActivityTaskManagerInternal;
+import android.app.ActivityTaskManagerInternal.SleepToken;
 import android.app.ActivityTaskManager;
 import android.app.ActivityThread;
 import android.app.AppOpsManager;
@@ -454,6 +455,7 @@
     WindowManagerInternal mWindowManagerInternal;
     PowerManager mPowerManager;
     ActivityManagerInternal mActivityManagerInternal;
+    ActivityTaskManagerInternal mActivityTaskManagerInternal;
     AutofillManagerInternal mAutofillManagerInternal;
     InputManagerInternal mInputManagerInternal;
     InputMethodManagerInternal mInputMethodManagerInternal;
@@ -1117,7 +1119,7 @@
         if (mWindowSleepToken != null) {
             return;
         }
-        mWindowSleepToken = mActivityManagerInternal.acquireSleepToken("WindowSleepToken",
+        mWindowSleepToken = mActivityTaskManagerInternal.acquireSleepToken("WindowSleepToken",
                 DEFAULT_DISPLAY);
     };
 
@@ -2001,6 +2003,7 @@
         mWindowManagerFuncs = windowManagerFuncs;
         mWindowManagerInternal = LocalServices.getService(WindowManagerInternal.class);
         mActivityManagerInternal = LocalServices.getService(ActivityManagerInternal.class);
+        mActivityTaskManagerInternal = LocalServices.getService(ActivityTaskManagerInternal.class);
         mInputManagerInternal = LocalServices.getService(InputManagerInternal.class);
         mDreamManagerInternal = LocalServices.getService(DreamManagerInternal.class);
         mPowerManagerInternal = LocalServices.getService(PowerManagerInternal.class);
@@ -7792,7 +7795,7 @@
     private void updateDreamingSleepToken(boolean acquire) {
         if (acquire) {
             if (mDreamingSleepToken == null) {
-                mDreamingSleepToken = mActivityManagerInternal.acquireSleepToken(
+                mDreamingSleepToken = mActivityTaskManagerInternal.acquireSleepToken(
                         "Dream", DEFAULT_DISPLAY);
             }
         } else {
@@ -7807,7 +7810,7 @@
     private void updateScreenOffSleepToken(boolean acquire) {
         if (acquire) {
             if (mScreenOffSleepToken == null) {
-                mScreenOffSleepToken = mActivityManagerInternal.acquireSleepToken(
+                mScreenOffSleepToken = mActivityTaskManagerInternal.acquireSleepToken(
                         "ScreenOff", DEFAULT_DISPLAY);
             }
         } else {
diff --git a/services/core/java/com/android/server/vr/Vr2dDisplay.java b/services/core/java/com/android/server/vr/Vr2dDisplay.java
index 3c2d66b..9183b08 100644
--- a/services/core/java/com/android/server/vr/Vr2dDisplay.java
+++ b/services/core/java/com/android/server/vr/Vr2dDisplay.java
@@ -3,6 +3,7 @@
 import static android.view.Display.INVALID_DISPLAY;
 
 import android.app.ActivityManagerInternal;
+import android.app.ActivityTaskManagerInternal;
 import android.app.Vr2dDisplayProperties;
 import android.app.Service;
 import android.content.BroadcastReceiver;
@@ -25,6 +26,7 @@
 import android.util.Log;
 import android.view.Surface;
 
+import com.android.server.LocalServices;
 import com.android.server.wm.WindowManagerInternal;
 
 /**
@@ -319,7 +321,7 @@
     }
 
     private void updateDisplayId(int displayId) {
-        mActivityManagerInternal.setVr2dDisplayId(displayId);
+        LocalServices.getService(ActivityTaskManagerInternal.class).setVr2dDisplayId(displayId);
         mWindowManagerInternal.setVr2dDisplayId(displayId);
     }
 
diff --git a/services/core/java/com/android/server/vr/VrManagerService.java b/services/core/java/com/android/server/vr/VrManagerService.java
index faa197e..50bf57f 100644
--- a/services/core/java/com/android/server/vr/VrManagerService.java
+++ b/services/core/java/com/android/server/vr/VrManagerService.java
@@ -19,7 +19,8 @@
 
 import android.Manifest;
 import android.app.ActivityManagerInternal;
-import android.app.ActivityManagerInternal.ScreenObserver;
+import android.app.ActivityTaskManagerInternal;
+import android.app.ActivityTaskManagerInternal.ScreenObserver;
 import android.app.ActivityManager;
 import android.app.AppOpsManager;
 import android.app.INotificationManager;
@@ -777,7 +778,7 @@
     @Override
     public void onBootPhase(int phase) {
         if (phase == SystemService.PHASE_SYSTEM_SERVICES_READY) {
-            LocalServices.getService(ActivityManagerInternal.class)
+            LocalServices.getService(ActivityTaskManagerInternal.class)
                     .registerScreenObserver(this);
 
             mNotificationManager = INotificationManager.Stub.asInterface(
diff --git a/services/core/java/com/android/server/wm/DockedStackDividerController.java b/services/core/java/com/android/server/wm/DockedStackDividerController.java
index cd8d677..e817d1a 100644
--- a/services/core/java/com/android/server/wm/DockedStackDividerController.java
+++ b/services/core/java/com/android/server/wm/DockedStackDividerController.java
@@ -651,7 +651,7 @@
         if (wasMinimized && mMinimizedDock && containsAppInDockedStack(openingApps)
                 && appTransition != TRANSIT_NONE &&
                 !AppTransition.isKeyguardGoingAwayTransit(appTransition)) {
-            if (mService.mAmInternal.isRecentsComponentHomeActivity(mService.mCurrentUserId)) {
+            if (mService.mAtmInternal.isRecentsComponentHomeActivity(mService.mCurrentUserId)) {
                 // When the home activity is the recents component and we are already minimized,
                 // then there is nothing to do here since home is already visible
             } else {
diff --git a/services/core/java/com/android/server/wm/RecentsAnimationController.java b/services/core/java/com/android/server/wm/RecentsAnimationController.java
index 2723801..b610695 100644
--- a/services/core/java/com/android/server/wm/RecentsAnimationController.java
+++ b/services/core/java/com/android/server/wm/RecentsAnimationController.java
@@ -16,7 +16,7 @@
 
 package com.android.server.wm;
 
-import static android.app.ActivityManagerInternal.APP_TRANSITION_RECENTS_ANIM;
+import static android.app.ActivityTaskManagerInternal.APP_TRANSITION_RECENTS_ANIM;
 import static android.app.WindowConfiguration.WINDOWING_MODE_FULLSCREEN;
 import static android.app.WindowConfiguration.WINDOWING_MODE_SPLIT_SCREEN_PRIMARY;
 import static android.app.WindowConfiguration.WINDOWING_MODE_UNDEFINED;
diff --git a/services/core/java/com/android/server/wm/WindowManagerService.java b/services/core/java/com/android/server/wm/WindowManagerService.java
index 54e9c28..2c7ab7e 100644
--- a/services/core/java/com/android/server/wm/WindowManagerService.java
+++ b/services/core/java/com/android/server/wm/WindowManagerService.java
@@ -117,6 +117,7 @@
 import android.app.ActivityManager.TaskSnapshot;
 import android.app.ActivityManagerInternal;
 import android.app.ActivityTaskManager;
+import android.app.ActivityTaskManagerInternal;
 import android.app.ActivityThread;
 import android.app.AppOpsManager;
 import android.app.IActivityManager;
@@ -434,6 +435,7 @@
     // TODO: Probably not needed once activities are fully in WM.
     final IActivityTaskManager mActivityTaskManager;
     final ActivityManagerInternal mAmInternal;
+    final ActivityTaskManagerInternal mAtmInternal;
 
     final AppOpsManager mAppOps;
     final PackageManagerInternal mPmInternal;
@@ -1017,6 +1019,7 @@
         mActivityManager = ActivityManager.getService();
         mActivityTaskManager = ActivityTaskManager.getService();
         mAmInternal = LocalServices.getService(ActivityManagerInternal.class);
+        mAtmInternal = LocalServices.getService(ActivityTaskManagerInternal.class);
         mAppOps = (AppOpsManager)context.getSystemService(Context.APP_OPS_SERVICE);
         AppOpsManager.OnOpChangedInternalListener opListener =
                 new AppOpsManager.OnOpChangedInternalListener() {
@@ -4987,16 +4990,16 @@
                 }
                 break;
                 case NOTIFY_APP_TRANSITION_STARTING: {
-                    mAmInternal.notifyAppTransitionStarting((SparseIntArray) msg.obj,
+                    mAtmInternal.notifyAppTransitionStarting((SparseIntArray) msg.obj,
                             msg.getWhen());
                 }
                 break;
                 case NOTIFY_APP_TRANSITION_CANCELLED: {
-                    mAmInternal.notifyAppTransitionCancelled();
+                    mAtmInternal.notifyAppTransitionCancelled();
                 }
                 break;
                 case NOTIFY_APP_TRANSITION_FINISHED: {
-                    mAmInternal.notifyAppTransitionFinished();
+                    mAtmInternal.notifyAppTransitionFinished();
                 }
                 break;
                 case WINDOW_HIDE_TIMEOUT: {
@@ -5021,7 +5024,7 @@
                 }
                 break;
                 case NOTIFY_DOCKED_STACK_MINIMIZED_CHANGED: {
-                    mAmInternal.notifyDockedStackMinimizedChanged(msg.arg1 == 1);
+                    mAtmInternal.notifyDockedStackMinimizedChanged(msg.arg1 == 1);
                 }
                 break;
                 case RESTORE_POINTER_ICON: {
@@ -5040,11 +5043,11 @@
                 }
                 break;
                 case NOTIFY_KEYGUARD_FLAGS_CHANGED: {
-                    mAmInternal.notifyKeyguardFlagsChanged((Runnable) msg.obj);
+                    mAtmInternal.notifyKeyguardFlagsChanged((Runnable) msg.obj);
                 }
                 break;
                 case NOTIFY_KEYGUARD_TRUSTED_CHANGED: {
-                    mAmInternal.notifyKeyguardTrustedChanged();
+                    mAtmInternal.notifyKeyguardTrustedChanged();
                 }
                 break;
                 case SET_HAS_OVERLAY_UI: {
@@ -5971,7 +5974,7 @@
 
     @Override
     public void setRecentsVisibility(boolean visible) {
-        mAmInternal.enforceCallerIsRecentsOrHasPermission(android.Manifest.permission.STATUS_BAR,
+        mAtmInternal.enforceCallerIsRecentsOrHasPermission(android.Manifest.permission.STATUS_BAR,
                 "setRecentsVisibility()");
         synchronized (mWindowMap) {
             mPolicy.setRecentsVisibilityLw(visible);
@@ -5993,7 +5996,7 @@
 
     @Override
     public void setShelfHeight(boolean visible, int shelfHeight) {
-        mAmInternal.enforceCallerIsRecentsOrHasPermission(android.Manifest.permission.STATUS_BAR,
+        mAtmInternal.enforceCallerIsRecentsOrHasPermission(android.Manifest.permission.STATUS_BAR,
                 "setShelfHeight()");
         synchronized (mWindowMap) {
             getDefaultDisplayContentLocked().getPinnedStackController().setAdjustedForShelf(visible,
diff --git a/services/core/java/com/android/server/wm/WindowSurfacePlacer.java b/services/core/java/com/android/server/wm/WindowSurfacePlacer.java
index d247960..1a8753d 100644
--- a/services/core/java/com/android/server/wm/WindowSurfacePlacer.java
+++ b/services/core/java/com/android/server/wm/WindowSurfacePlacer.java
@@ -16,9 +16,9 @@
 
 package com.android.server.wm;
 
-import static android.app.ActivityManagerInternal.APP_TRANSITION_SNAPSHOT;
-import static android.app.ActivityManagerInternal.APP_TRANSITION_SPLASH_SCREEN;
-import static android.app.ActivityManagerInternal.APP_TRANSITION_WINDOWS_DRAWN;
+import static android.app.ActivityTaskManagerInternal.APP_TRANSITION_SNAPSHOT;
+import static android.app.ActivityTaskManagerInternal.APP_TRANSITION_SPLASH_SCREEN;
+import static android.app.ActivityTaskManagerInternal.APP_TRANSITION_WINDOWS_DRAWN;
 
 import static android.view.WindowManager.TRANSIT_CRASHING_ACTIVITY_CLOSE;
 import static android.view.WindowManager.TRANSIT_DOCK_TASK_FROM_RECENTS;
@@ -44,7 +44,6 @@
 import static android.view.WindowManager.TRANSIT_WALLPAPER_INTRA_OPEN;
 import static android.view.WindowManager.TRANSIT_WALLPAPER_OPEN;
 import static com.android.server.wm.AppTransition.isKeyguardGoingAwayTransit;
-import static com.android.server.wm.AppTransition.isTaskTransit;
 import static com.android.server.wm.WindowManagerDebugConfig.DEBUG;
 import static com.android.server.wm.WindowManagerDebugConfig.DEBUG_APP_TRANSITIONS;
 import static com.android.server.wm.WindowManagerDebugConfig.SHOW_LIGHT_TRANSACTIONS;