[Media Router] Use DialMediaSinkService in MediaRouterMojoImpl

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

Index: chrome/browser/media/router/mojo/media_router_mojo_test.cc
diff --git a/chrome/browser/media/router/mojo/media_router_mojo_test.cc b/chrome/browser/media/router/mojo/media_router_mojo_test.cc
index d88c9649ee66492920e2f9a33701084de4617d1c..9ed877fa8379bd3355b9fda2d4717bada7bf1e35 100644
--- a/chrome/browser/media/router/mojo/media_router_mojo_test.cc
+++ b/chrome/browser/media/router/mojo/media_router_mojo_test.cc
@@ -11,14 +11,7 @@
 
 namespace media_router {
 namespace {
-
 const char kInstanceId[] = "instance123";
-
-void ExpectEqualStrings(const std::string& expected,
-                        const std::string& actual) {
-  EXPECT_EQ(expected, actual);
-}
-
 }  // namespace
 
 MockMediaRouteProvider::MockMediaRouteProvider() {}
@@ -52,7 +45,9 @@ MockMediaRouteControllerObserver::MockMediaRouteControllerObserver(
 MockMediaRouteControllerObserver::~MockMediaRouteControllerObserver() {}
 
 MediaRouterMojoTest::MediaRouterMojoTest()
-    : mock_media_router_(new MediaRouterMojoImpl(&mock_event_page_tracker_)) {
+    : profile_(new TestingProfile()),
+      mock_media_router_(
+          new MediaRouterMojoImpl(&mock_event_page_tracker_, profile_.get())) {
   mock_media_router_->Initialize();
   mock_media_router_->set_instance_id_for_test(kInstanceId);
   extension_ = extensions::test_util::CreateEmptyExtension();
@@ -70,9 +65,9 @@ void MediaRouterMojoTest::ConnectProviderManagerService() {
   mojom::MediaRouteProviderPtr mojo_media_router;
   binding_.reset(new mojo::Binding<mojom::MediaRouteProvider>(
       &mock_media_route_provider_, mojo::MakeRequest(&mojo_media_router)));
+  EXPECT_CALL(mock_register_callback_, Run(kInstanceId, false));
   media_router_proxy_->RegisterMediaRouteProvider(
-      std::move(mojo_media_router),
-      base::Bind(&ExpectEqualStrings, kInstanceId));
+      std::move(mojo_media_router), mock_register_callback_.Get());
 }
 
 void MediaRouterMojoTest::SetUp() {