Show media router toolbar icon ephemerally for active local routes and issues

chrome/browser/media/router/media_router_ui_service_factory_unittest.cc

Index: chrome/browser/media/router/media_router_ui_service_factory_unittest.cc
diff --git a/chrome/browser/media/router/media_router_ui_service_factory_unittest.cc b/chrome/browser/media/router/media_router_ui_service_factory_unittest.cc
index 2fb56b6a0a9f8f959dd1778f9fd97692bfc4dc67..2fe84c6b665bbb3d9237a9fac64a2e704cdaa0be 100644
--- a/chrome/browser/media/router/media_router_ui_service_factory_unittest.cc
+++ b/chrome/browser/media/router/media_router_ui_service_factory_unittest.cc
@@ -44,8 +44,13 @@ class MediaRouterUIServiceFactoryUnitTest : public testing::Test {
 };
 
 TEST_F(MediaRouterUIServiceFactoryUnitTest, CreateService) {
-  MediaRouterUIService* service =
-      MediaRouterUIServiceFactory::GetForBrowserContext(profile());
+  // We call BuildServiceInstanceFor() directly because
+  // MediaRouterUIServiceFactory::GetForBrowserContext() is set to return a
+  // nullptr for a test profile.
+  std::unique_ptr<MediaRouterUIService> service(
+      static_cast<MediaRouterUIService*>(
+          MediaRouterUIServiceFactory::GetInstance()->BuildServiceInstanceFor(
+              profile())));
   ASSERT_TRUE(service);
 }