Merge changes from topic "fw_quickstep_update" into pi-dev

* changes:
  Reparent recents animation task leash to app animation layer
  Allow recents animation to override divider minimized state
  Prevent unnecessary reordering of the home stack

core/java/android/app/IActivityManager.aidl

@@ -450,7 +450,7 @@ interface IActivityManager {
             in Intent intent, in String resolvedType, in Bundle options, int userId);
     void startRecentsActivity(in Intent intent, in IAssistDataReceiver assistDataReceiver,
             in IRecentsAnimationRunner recentsAnimationRunner);
-    void cancelRecentsAnimation();
+    void cancelRecentsAnimation(boolean restoreHomeStackPosition);
     int startActivityFromRecents(int taskId, in Bundle options);
     Bundle getActivityOptions(in IBinder token);
     List<IBinder> getAppTasks(in String callingPackage);

core/java/android/view/IRecentsAnimationController.aidl

@@ -59,4 +59,9 @@ interface IRecentsAnimationController {
     * taken.
     */
     void setAnimationTargetsBehindSystemBars(boolean behindSystemBars);
+
+    /**
+     * Informs the system that the primary split-screen stack should be minimized.
+     */
+    void setSplitScreenMinimized(boolean minimized);
 }