Merge "Early bail out if the leash is invalid." into udc-dev

            @PipAnimationController.TransitionDirection int direction,

            SurfaceControl.Transaction tx,

            WindowContainerTransaction wct) {

        if (mLeash == null || !mLeash.isValid()) {

            ProtoLog.w(ShellProtoLogGroup.WM_SHELL_PICTURE_IN_PICTURE,

                    "%s: Invalid leash on prepareFinishResizeTransaction: %s", TAG, mLeash);

            return;

        }

        final Rect taskBounds;

        if (isInPipDirection(direction)) {

            // If we are animating from fullscreen using a bounds animation, then reset the