Clean up

Author: Emmanuel Garcia

shell/platform/android/test/io/flutter/plugin/platform/PlatformViewsControllerTest.java

@@ -601,8 +601,8 @@ public void detach__destroysOverlaySurfaces() {
     final FlutterImageView overlayImageView = mock(FlutterImageView.class);
     when(overlayImageView.acquireLatestImage()).thenReturn(true);
 
-    platformViewsController.createOverlaySurface(overlayImageView);
-
+    final FlutterOverlaySurface overlaySurface =
+        platformViewsController.createOverlaySurface(overlayImageView);
     // This is OK.
     platformViewsController.onDisplayOverlaySurface(
         overlaySurface.getId(), /* x=*/ 0, /* y=*/ 0, /* width=*/ 10, /* height=*/ 10);

testing/scenario_app/android/app/src/androidTest/java/dev/flutter/scenariosui/MemoryLeakTests.java

@@ -17,7 +17,6 @@
 @RunWith(AndroidJUnit4.class)
 @LargeTest
 public class MemoryLeakTests {
-
   @Rule
   public ActivityTestRule<TextPlatformViewActivity> activityRule =
       new ActivityTestRule<>(
@@ -30,6 +29,6 @@ public void platformViewHybridComposition_launchActivityFinishAndLaunchAgain() t
     intent.putExtra("scenario", "platform_view");
     intent.putExtra("use_android_view", true);
 
-    TextPlatformViewActivity activity = activityRule.launchActivity(intent);
+    activityRule.launchActivity(intent);
   }
 }