Merge "Use clear-all recent tasks call" into ub-launcher3-edmonton-polish

quickstep/src/com/android/quickstep/views/RecentsView.java

@@ -935,10 +935,8 @@ public abstract class RecentsView<T extends BaseActivity> extends PagedView impl
         mPendingAnimation = pendingAnimation;
         mPendingAnimation.addEndListener((onEndListener) -> {
             if (onEndListener.isSuccess) {
-                int taskViewCount = getTaskViewCount();
-                for (int i = 0; i < taskViewCount; i++) {
-                    removeTask(getTaskViewAt(i).getTask(), -1, onEndListener, false);
-                }
+                // Remove all the task views now
+                ActivityManagerWrapper.getInstance().removeAllRecentTasks();
                 removeAllViews();
                 onAllTasksRemoved();
             }