[Media Router] Use DialMediaSinkService in MediaRouterMojoImpl

chrome/browser/media/router/discovery/media_sink_service_base.h

Index: chrome/browser/media/router/discovery/media_sink_service_base.h
diff --git a/chrome/browser/media/router/discovery/media_sink_service_base.h b/chrome/browser/media/router/discovery/media_sink_service_base.h
index 1c761e4e5f99f85a7dfd466364d202005bb6e7ba..475bc1b0919a8b1e72b09c13702b8ff8e49b1102 100644
--- a/chrome/browser/media/router/discovery/media_sink_service_base.h
+++ b/chrome/browser/media/router/discovery/media_sink_service_base.h
@@ -26,11 +26,16 @@ class MediaSinkServiceBase : public MediaSinkService {
   // Called when |finish_timer_| expires.
   void OnFetchCompleted();
 
-  // Helper function to start |finish_timer_|.
+  // Helper function to start |finish_timer_|. Create a new timer if none
+  // exists.
   void StartTimer();
 
-  // Timer for finishing fetching.
-  std::unique_ptr<base::Timer> finish_timer_;
+  // Helper function to stop |finish_timer_|.
+  void StopTimer();
+
+  // Helper function to restart |finish_timer|. No-op if timer does not exist or
+  // timer is currently running.
+  void RestartTimer();
 
   // Time out value for |finish_timer_|
   int fetch_complete_timeout_secs_;
@@ -45,6 +50,9 @@ class MediaSinkServiceBase : public MediaSinkService {
   friend class MediaSinkServiceBaseTest;
   FRIEND_TEST_ALL_PREFIXES(MediaSinkServiceBaseTest,
                            TestFetchCompleted_SameSink);
+
+  // Timer for finishing fetching.
+  std::unique_ptr<base::Timer> finish_timer_;
 };
 
 }  // namespace media_router