Merge "DO NOT MERGE Don't send config change when display is removed" into pi-dev

        while (getChildCount() > 0) {

            final ActivityStack stack = getChildAt(0);

            if (destroyContentOnRemoval) {

                // Override the stack configuration to make it equal to the current applied one, so

                // that we don't accidentally report configuration change to activities that are

                // going to be finished.

                stack.onOverrideConfigurationChanged(stack.getConfiguration());

                mSupervisor.moveStackToDisplayLocked(stack.mStackId, DEFAULT_DISPLAY,

                        false /* onTop */);

                stack.finishAllActivitiesLocked(true /* immediately */);