PIP: Dismiss Recents when PIP moves to fullscreen

Bug: 27792906
Change-Id: I3d5c813362868c332e805a7beb325e9874e31606

packages/SystemUI/src/com/android/systemui/recents/tv/RecentsTvActivity.java

@@ -98,7 +98,11 @@ public class RecentsTvActivity extends Activity implements OnPreDrawListener {
         public void onShowPipMenu() { }
 
         @Override
-        public void onMoveToFullscreen() { }
+        public void onMoveToFullscreen() {
+            // Recents should be dismissed when PIP moves to fullscreen. If not, Recents will
+            // be unnecessarily shown in the scenario: PIP->Fullscreen->PIP.
+            dismissRecentsToLaunchTargetTaskOrHome();
+        }
 
         @Override
         public void onPipResizeAboutToStart() { }