Merge "Support exit to full screen to non-split app" into tm-qpr-dev

        @Override

        public void onNoLongerSupportMultiWindow() {

            if (mMainStage.isActive()) {

                final boolean isMainStage = mMainStageListener == this;

                if (!ENABLE_SHELL_TRANSITIONS) {

                    StageCoordinator.this.exitSplitScreen(null /* childrenToTop */,

                    StageCoordinator.this.exitSplitScreen(isMainStage ? mMainStage : mSideStage,

                            EXIT_REASON_APP_DOES_NOT_SUPPORT_MULTIWINDOW);

                    return;

                }

                final int stageType = isMainStage ? STAGE_TYPE_MAIN : STAGE_TYPE_SIDE;

                final WindowContainerTransaction wct = new WindowContainerTransaction();

                prepareExitSplitScreen(STAGE_TYPE_UNDEFINED, wct);

                mSplitTransitions.startDismissTransition(wct,

                        StageCoordinator.this, STAGE_TYPE_UNDEFINED,

                prepareExitSplitScreen(stageType, wct);

                mSplitTransitions.startDismissTransition(wct,StageCoordinator.this, stageType,

                        EXIT_REASON_APP_DOES_NOT_SUPPORT_MULTIWINDOW);

            }

        }