Add MediaEffects sample to build.gradle

Change-Id: I5f160d076a5310fe53a920c88046aa01b3b93129
diff --git a/build.gradle b/build.gradle
index 8aaf477..41a03a4 100644
--- a/build.gradle
+++ b/build.gradle
@@ -48,6 +48,7 @@
 "ui/views/SwipeRefreshLayout/SwipeRefreshListFragment",
 "ui/views/SwipeRefreshLayout/SwipeRefreshMultipleViews",
 "media/MediaRouter",
+"media/MediaEffects",
 "admin/BasicManagedProfile",
 "media/Camera2Basic",
 "media/Camera2Video",