Prevent ProgressBar from slowing down everything.

        final View[] children = mChildren;

        for (int i = 0; i < count; i++) {

            final View child = children[i];

            if ((child.mViewFlags & VISIBILITY_MASK) == VISIBLE || child.getAnimation() != null) {

                child.mRecreateDisplayList = (child.mPrivateFlags & INVALIDATED) == INVALIDATED;

                child.mPrivateFlags &= ~INVALIDATED;

                child.getDisplayList();

                child.mRecreateDisplayList = false;

            }

        }

    }

    /**

     * Draw one child of this View Group. This method is responsible for getting