Remove unnecessary layer in view hierarchy

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=140369506

library/src/main/res/layout/exo_simple_player_view.xml

@@ -13,9 +13,7 @@
      See the License for the specific language governing permissions and
      limitations under the License.
 -->
-<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:layout_height="match_parent"
-    android:layout_width="match_parent">
+<merge xmlns:android="http://schemas.android.com/apk/res/android">
 
   <com.google.android.exoplayer2.ui.AspectRatioFrameLayout android:id="@id/exo_content_frame"
       android:layout_width="match_parent"
@@ -48,4 +46,4 @@
       android:layout_width="match_parent"
       android:layout_height="match_parent"/>
 
-</FrameLayout>
+</merge>