Merge cherrypicks of [14105005] into sc-release

        // the volume dialog container itself, so this is fine.

        for (int i = 0; i < mDialogView.getChildCount(); i++) {

            final View view = mDialogView.getChildAt(i);

            final int[] locInWindow = new int[2];

            view.getLocationInWindow(locInWindow);

            mTouchableRegion.op(

                    view.getLeft(),

                    view.getTop(),

                    view.getRight(),

                    view.getBottom(),

                    locInWindow[0],

                    locInWindow[1],

                    locInWindow[0] + view.getWidth(),

                    locInWindow[1] + view.getHeight(),

                    Region.Op.UNION);

        }