Merge "Allow touches through Taskbar when dragging to home screen" into sc-dev

    private ViewTreeObserverWrapper.OnComputeInsetsListener createTaskbarInsetsComputer() {

        return insetsInfo -> {

            if (getAlpha() < AlphaUpdateListener.ALPHA_CUTOFF_THRESHOLD) {

                // We're invisible, let touches pass through us.

            if (getAlpha() < AlphaUpdateListener.ALPHA_CUTOFF_THRESHOLD

                    || mTaskbarView.isDraggingItem()) {

                // We're invisible or dragging out of taskbar, let touches pass through us.

                insetsInfo.touchableRegion.setEmpty();

                insetsInfo.setTouchableInsets(TOUCHABLE_INSETS_REGION);

                // TODO(b/182234653): Shouldn't need to do this, but for the meantime, reporting

                // that visibleInsets is empty allows DragEvents through. Setting them as completely

                // empty reverts to default behavior, so set 1 px instead.

                insetsInfo.visibleInsets.set(0, 0, 0, 1);

            } else {

                 // We're visible again, accept touches anywhere in our bounds.

                insetsInfo.setTouchableInsets(TOUCHABLE_INSETS_FRAME);