MediaSession2: Clean up TODOs under frameworks/base/services

This CL includes following changes
  - Remove outdated TODOs
  - Added buganizer issue if the remaining work takes more than 5m

Test: Run MediaComponents tests
Change-Id: I0bda68dba58a71824107b58527f71cc1f8d1f949
diff --git a/services/core/java/com/android/server/media/MediaSessionService.java b/services/core/java/com/android/server/media/MediaSessionService.java
index c6701d5..6411ae1 100644
--- a/services/core/java/com/android/server/media/MediaSessionService.java
+++ b/services/core/java/com/android/server/media/MediaSessionService.java
@@ -136,8 +136,8 @@
     private IRemoteVolumeController mRvc;
 
     // MediaSession2 support
-    // TODO(jaewan): Support multi-user and managed profile.
-    // TODO(jaewan): Make it priority list for handling volume/media key.
+    // TODO(jaewan): Support multi-user and managed profile. (b/73597722)
+    // TODO(jaewan): Make it priority list for handling volume/media key. (b/73760382)
     private final Map<SessionToken2, MediaController2> mSessionRecords = new ArrayMap<>();
 
     private final List<SessionTokensListenerRecord> mSessionTokensListeners = new ArrayList<>();
@@ -184,7 +184,7 @@
         updateUser();
 
         registerPackageBroadcastReceivers();
-        // TODO(jaewan): Query per users
+        // TODO(jaewan): Query per users (b/73597722)
         buildMediaSessionService2List();
     }
 
@@ -443,6 +443,7 @@
         // TODO(jaewan): Only consider changed packages when building session service list
         //               when we make this multi-user aware. At that time,
         //               use PackageMonitor.getChangingUserId() to know which user has changed.
+        //               (b/73597722)
         IntentFilter filter = new IntentFilter();
         filter.addDataScheme("package");
         filter.addAction(Intent.ACTION_PACKAGE_ADDED);
@@ -465,7 +466,7 @@
                 }
                 // Check if the package is replacing (i.e. reinstalling)
                 final boolean isReplacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false);
-                // TODO(jaewan): Add multi-user support with this.
+                // TODO(jaewan): Add multi-user support with this. (b/73597722)
                 // final int uid = intent.getIntExtra(Intent.EXTRA_UID, 0);
 
                 if (DEBUG) {
@@ -506,8 +507,7 @@
         if (DEBUG) {
             Log.d(TAG, "buildMediaSessionService2List");
         }
-        // TODO(jaewan): Also query for managed profile users.
-        // TODO(jaewan): Similar codes are also at the updatable. Can't we share codes?
+        // TODO(jaewan): Also query for managed profile users. (b/73597722)
         PackageManager manager = getContext().getPackageManager();
         List<ResolveInfo> services = new ArrayList<>();
         // If multiple actions are declared for a service, browser gets higher priority.
@@ -539,7 +539,7 @@
                 ServiceInfo serviceInfo = services.get(i).serviceInfo;
                 int uid;
                 try {
-                    // TODO(jaewan): Do this per user.
+                    // TODO(jaewan): Do this per user. (b/73597722)
                     uid = manager.getPackageUid(serviceInfo.packageName,
                             PackageManager.GET_META_DATA);
                 } catch (NameNotFoundException e) {
@@ -1490,16 +1490,6 @@
                     mUserRecords.valueAt(i).dumpLocked(pw, "");
                 }
                 mAudioPlayerStateMonitor.dump(getContext(), pw, "");
-
-                // TODO(jaewan): Remove this debug command before ship.
-                if (args != null && args.length > 0 && "--purge".equals(args[0])) {
-                    mSessionRecords.clear();
-                }
-                pw.println();
-                pw.println("Session2: size=" + mSessionRecords.size());
-                for (SessionToken2 token : mSessionRecords.keySet()) {
-                    pw.println("  " + token);
-                }
             }
         }
 
@@ -1567,7 +1557,7 @@
             destroySession2Internal(token);
         }
 
-        // TODO(jaewan): Protect this API with permission
+        // TODO(jaewan): Protect this API with permission (b/73226436)
         @Override
         public List<Bundle> getSessionTokens(boolean activeSessionOnly,
                 boolean sessionServiceOnly) throws RemoteException {
@@ -1587,8 +1577,8 @@
             return tokens;
         }
 
-        // TODO(jaewan): Protect this API with permission
-        // TODO(jaewan): "userId != calling user" needs extra protection
+        // TODO(jaewan): Protect this API with permission (b/73226436)
+        // TODO(jaewan): "userId != calling user" needs extra protection (b/73226436)
         @Override
         public void addSessionTokensListener(ISessionTokensListener listener, int userId,
                 String packageName) {
@@ -1603,7 +1593,7 @@
             }
         }
 
-        // TODO(jaewan): Protect this API with permission
+        // TODO(jaewan): Protect this API with permission (b/73226436)
         @Override
         public void removeSessionTokensListener(ISessionTokensListener listener) {
             synchronized (mLock) {
@@ -2039,7 +2029,8 @@
 
         public SessionTokensListenerRecord(ISessionTokensListener listener, int userId) {
             mListener = listener;
-            mUserId = userId; // TODO should userId be mapped through mFullUserIds?
+            // TODO should userId be mapped through mFullUserIds? (b/73597722)
+            mUserId = userId;
         }
 
         @Override
@@ -2060,6 +2051,7 @@
             for (SessionToken2 token : mSessionRecords.keySet()) {
                 // TODO(jaewan): Remove the check for UserHandle.USER_ALL (shouldn't happen).
                 //               This happens when called form buildMediaSessionService2List(...).
+                //               (b/73760382)
                 if (UserHandle.getUserId(token.getUid()) == userId
                         || UserHandle.USER_ALL == userId) {
                     tokens.add(token.toBundle());
@@ -2067,7 +2059,7 @@
             }
 
             for (SessionTokensListenerRecord record : mSessionTokensListeners) {
-                // TODO should userId be mapped through mFullUserIds?
+                // TODO(jaewan): Should userId be mapped through mFullUserIds? (b/73760382)
                 if (record.mUserId == userId || record.mUserId == UserHandle.USER_ALL) {
                     try {
                         record.mListener.onSessionTokensChanged(tokens);