[Media Router] Add ProvideSinks() Mojo API

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

Index: chrome/browser/media/router/mojo/media_router_mojo_impl_unittest.cc
diff --git a/chrome/browser/media/router/mojo/media_router_mojo_impl_unittest.cc b/chrome/browser/media/router/mojo/media_router_mojo_impl_unittest.cc
index cd8f2ed483ffed7e96e9aa75753ff55569dedc01..e5edffc9ba6521e1140d1699a4ff79f7ba01ba36 100644
--- a/chrome/browser/media/router/mojo/media_router_mojo_impl_unittest.cc
+++ b/chrome/browser/media/router/mojo/media_router_mojo_impl_unittest.cc
@@ -1181,6 +1181,31 @@ TEST_F(MediaRouterMojoImplTest, SearchSinks) {
   run_loop.RunUntilIdle();
 }
 
+TEST_F(MediaRouterMojoImplTest, OnSinksDiscovered) {
+  MediaRouter::MediaSinkList* sinks = new MediaRouter::MediaSinkList();
+  MediaSink* expected_sink =
+      new MediaSink(kSinkId, kSinkName, MediaSink::IconType::CAST);
+  sinks->push_back(base::WrapUnique(expected_sink));
+  EXPECT_EQ(expected_sink, sinks->at(0).get());
+
+  EXPECT_CALL(mock_media_route_provider_, OnSinksDiscovered_(_))
+      .WillOnce(Invoke([](const MediaRouter::MediaSinkList& actual_sinks) {
+        EXPECT_EQ(size_t(1), actual_sinks.size());
+        MediaSink* actual_sink = actual_sinks[0].get();
+        EXPECT_EQ(kSinkId, actual_sink->id());
+        EXPECT_EQ(kSinkName, actual_sink->name());
+        EXPECT_EQ(MediaSink::IconType::CAST, actual_sink->icon_type());
+        EXPECT_FALSE(actual_sink->description());
+        EXPECT_FALSE(actual_sink->domain());
+        EXPECT_FALSE(actual_sink->model_name());
+      }));
+
+  router()->OnSinksDiscovered(base::WrapUnique(sinks));
+
+  base::RunLoop run_loop;
+  run_loop.RunUntilIdle();
+}
+
 class MediaRouterMojoExtensionTest : public ::testing::Test {
  public:
   MediaRouterMojoExtensionTest() : process_manager_(nullptr) {}