Reland: Dispatch TaskOrg events before finishing surface placement

This ensures that calls to ITaskOrganizer.onTaskInfoChanged
are sent before an IWindowContainterTransactionCallback is
called back.

Bug: 178535312
Test: verified dispatching of task info changes happens before
onTransactionReady is called back
Test: exit PIP animation uses updated source rect hint in its
animation

Change-Id: I972f428b90899fbbf9ff428db82ba1d2c25ebcc4

services/core/java/com/android/server/wm/RootWindowContainer.java

@@ -851,6 +851,8 @@ class RootWindowContainer extends WindowContainer<DisplayContent>
         mWmService.openSurfaceTransaction();
         try {
             applySurfaceChangesTransaction();
+            // Send any pending task-info changes that were queued-up during a layout deferment
+            mWmService.mAtmService.mTaskOrganizerController.dispatchPendingEvents();
             mWmService.mSyncEngine.onSurfacePlacement();
         } catch (RuntimeException e) {
             Slog.wtf(TAG, "Unhandled exception in Window Manager", e);
@@ -863,8 +865,6 @@ class RootWindowContainer extends WindowContainer<DisplayContent>
             }
         }
 
-        // Send any pending task-info changes that were queued-up during a layout deferment
-        mWmService.mAtmService.mTaskOrganizerController.dispatchPendingEvents();
         mWmService.mAnimator.executeAfterPrepareSurfacesRunnables();
 
         checkAppTransitionReady(surfacePlacer);