Improve PIP enter transition w/ gesture nav (3/N)

Directly transition Activity to PiP mode in launcher if the Activity
claims auto-pip support. Video is taken by commenting out the
requirement of setting the auto-pip flag.

Note that we need app to actively push up-to-dated
PictureInPictureParams to the framework, otherwise we won't be get
- PictureInPictureParams on first entering
- Staled PictureInPictureParams if the aspect ratio is changed

Video: http://rcll/aaaaaabFQoRHlzixHdtY/abenIxLFI1pZzF2O8t4TbS
Bug: 143965596
Test: see demo videos
Change-Id: Iea9a6ff39a79431ac1afa14aea812c500b3ca3b2

quickstep/src/com/android/quickstep/RecentsAnimationController.java

@@ -18,6 +18,8 @@ package com.android.quickstep;
 import static com.android.launcher3.util.Executors.MAIN_EXECUTOR;
 import static com.android.launcher3.util.Executors.UI_HELPER_EXECUTOR;
 
+import android.graphics.Rect;
+
 import androidx.annotation.NonNull;
 import androidx.annotation.UiThread;
 
@@ -155,6 +157,18 @@ public class RecentsAnimationController {
         });
     }
 
+    /**
+     * Sets the final bounds on a Task. This is used by Launcher to notify the system that
+     * animating Activity to PiP has completed and the associated task surface should be updated
+     * accordingly. This should be called before `finish`
+     * @param taskId for which the leash should be updated
+     * @param destinationBounds bounds of the final PiP window
+     */
+    public void setFinishTaskBounds(int taskId, Rect destinationBounds) {
+        UI_HELPER_EXECUTOR.execute(
+                () -> mController.setFinishTaskBounds(taskId, destinationBounds));
+    }
+
     /**
      * Enables the input consumer to start intercepting touches in the app window.
      */