Merge "Fix the startingWindow may clipped during AR#transferStartingWindow" into tm-dev

                mTransitionController.collect(tStartingWindow);

                tStartingWindow.reparent(this, POSITION_TOP);

                // Propagate other interesting state between the tokens. If the old token is displayed,

                // we should immediately force the new one to be displayed. If it is animating, we need

                // to move that animation to the new one.

                // Clear the frozen insets state when transferring the existing starting window to

                // the next target activity.  In case the frozen state from a trampoline activity

                // affecting the starting window frame computation to see the window being

                // clipped if the rotation change during the transition animation.

                tStartingWindow.clearFrozenInsetsState();

                // Propagate other interesting state between the tokens. If the old token is

                // displayed, we should immediately force the new one to be displayed. If it is

                // animating, we need to move that animation to the new one.

                if (fromActivity.allDrawn) {

                    allDrawn = true;

                }

                true, false, false, false);

        waitUntilHandlersIdle();

        final WindowState startingWindow = activityTop.mStartingWindow;

        assertNotNull(startingWindow);

        // Make the top one invisible, and try transferring the starting window from the top to the

        // bottom one.

        activityTop.setVisibility(false, false);

        activityBottom.transferStartingWindowFromHiddenAboveTokenIfNeeded();

        waitUntilHandlersIdle();

        // Expect getFrozenInsetsState will be null when transferring the starting window.

        assertNull(startingWindow.getFrozenInsetsState());

        // Assert that the bottom window now has the starting window.

        assertNoStartingWindow(activityTop);

        assertHasStartingWindow(activityBottom);