[Media Router] Use DialMediaSinkService in MediaRouterMojoImpl

chrome/browser/media/router/mojo/media_router_mojo_test.h

Index: chrome/browser/media/router/mojo/media_router_mojo_test.h
diff --git a/chrome/browser/media/router/mojo/media_router_mojo_test.h b/chrome/browser/media/router/mojo/media_router_mojo_test.h
index 4149d41bb8d26e7ae8fcd4ab4af851a69cf55620..56a1925139c57a015f861163c827b404bf750dbf 100644
--- a/chrome/browser/media/router/mojo/media_router_mojo_test.h
+++ b/chrome/browser/media/router/mojo/media_router_mojo_test.h
@@ -9,6 +9,7 @@
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
+#include "base/test/mock_callback.h"
 #include "chrome/browser/media/router/mock_media_router.h"
 #include "chrome/browser/media/router/mojo/media_router_mojo_impl.h"
 #include "chrome/browser/media/router/test_helper.h"
@@ -183,9 +184,13 @@ class MediaRouterMojoTest : public ::testing::Test {
   // Mojo proxy object for |mock_media_router_|
   media_router::mojom::MediaRouterPtr media_router_proxy_;
 
+  base::MockCallback<mojom::MediaRouter::RegisterMediaRouteProviderCallback>
+      mock_register_callback_;
+
  private:
   content::TestBrowserThreadBundle test_thread_bundle_;
   scoped_refptr<extensions::Extension> extension_;
+  std::unique_ptr<TestingProfile> profile_;
   std::unique_ptr<MediaRouterMojoImpl> mock_media_router_;
   std::unique_ptr<mojo::Binding<mojom::MediaRouteProvider>> binding_;