Merge "Changing LayerDrawable to RippleDrawable in XML" into main

  ~ See the License for the specific language governing permissions and

  ~ limitations under the License.

  -->

<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >

    <!-- Since this layer list has just one layer, we can remove it and replace with the inner

         layer drawable. However this should only be done when the flag

<ripple xmlns:android="http://schemas.android.com/apk/res/android"

    android:color="@color/qs_tile_ripple_color">

    <!-- We don't really use the ripple effect here, but changing it to LayerDrawable causes

         performance regression, see: b/339412453.

         Since this ripple has just one layer inside, we can try to remove that extra "background"

         layer. However this should only be done when the flag

         com.android.systemui.qs_tile_focus_state has completed all its stages and this drawable

         fully replaces the previous one to ensure consistency with code sections searching for

         specific ids in drawable hierarchy -->

         specific ids in drawable hierarchy 

         -->

    <item

        android:id="@id/background">

        <layer-list>

            </item>

        </layer-list>

    </item>

</layer-list>

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</ripple>

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