Handle KEYCODE_SOFT_SLEEP from Ungaze.

Needed for Ungaze to trigger "soft sleep" (respecting wake locks); operates by
sending new KEYCODE_SOFT_SLEEP to PhoneWindowManager, which calls
PowerManagerService's new method setUserInactiveOverride (thereby
causing immediate sleep, modulo wakelocks, upon next iteration of
PowerManagerService's main loop).

BUG: b/23589870
Change-Id: Iddafdde923605d119075e890eeda5d3fd3fd2bc7
diff --git a/services/core/java/com/android/server/policy/PhoneWindowManager.java b/services/core/java/com/android/server/policy/PhoneWindowManager.java
index 34737c1..c7c5afd 100644
--- a/services/core/java/com/android/server/policy/PhoneWindowManager.java
+++ b/services/core/java/com/android/server/policy/PhoneWindowManager.java
@@ -65,6 +65,7 @@
 import android.os.Message;
 import android.os.Messenger;
 import android.os.PowerManager;
+import android.os.PowerManagerInternal;
 import android.os.Process;
 import android.os.RemoteException;
 import android.os.ServiceManager;
@@ -265,6 +266,7 @@
     WindowManagerFuncs mWindowManagerFuncs;
     WindowManagerInternal mWindowManagerInternal;
     PowerManager mPowerManager;
+    PowerManagerInternal mPowerManagerInternal;
     ActivityManagerInternal mActivityManagerInternal;
     DreamManagerInternal mDreamManagerInternal;
     IStatusBarService mStatusBarService;
@@ -1324,6 +1326,7 @@
         mActivityManagerInternal = LocalServices.getService(ActivityManagerInternal.class);
         mDreamManagerInternal = LocalServices.getService(DreamManagerInternal.class);
         mAppOpsManager = (AppOpsManager) mContext.getSystemService(Context.APP_OPS_SERVICE);
+        mPowerManagerInternal = LocalServices.getService(PowerManagerInternal.class);
 
         // Init display burn-in protection
         boolean burnInProtectionEnabled = context.getResources().getBoolean(
@@ -5080,6 +5083,15 @@
                 break;
             }
 
+            case KeyEvent.KEYCODE_SOFT_SLEEP: {
+                result &= ~ACTION_PASS_TO_USER;
+                isWakeKey = false;
+                if (!down) {
+                    mPowerManagerInternal.setUserInactiveOverrideFromWindowManager();
+                }
+                break;
+            }
+
             case KeyEvent.KEYCODE_WAKEUP: {
                 result &= ~ACTION_PASS_TO_USER;
                 isWakeKey = true;