Create MediaRouterActionController and MediaRouterUIService

chrome/test/BUILD.gn

Index: chrome/test/BUILD.gn
diff --git a/chrome/test/BUILD.gn b/chrome/test/BUILD.gn
index 31b0d2a5071a652a2b3c9a36c6c9800641db3c15..45ad9dec7fd5d7560a51642e5455d0be61aae67c 100644
--- a/chrome/test/BUILD.gn
+++ b/chrome/test/BUILD.gn
@@ -4246,6 +4246,9 @@ test("unit_tests") {
       "../browser/media/router/issue_unittest.cc",
       "../browser/media/router/media_route_unittest.cc",
       "../browser/media/router/media_router_factory_unittest.cc",
+      # TODO(crbug.com/646627): Move media_router_ui_service_factory_unittest.cc
+      # to chrome/browser/ui/.
+      "../browser/media/router/media_router_ui_service_factory_unittest.cc",
       "../browser/media/router/media_sink_unittest.cc",
       "../browser/media/router/media_sinks_observer_unittest.cc",
       "../browser/media/router/media_source_helper_unittest.cc",
@@ -4260,6 +4263,7 @@ test("unit_tests") {
         "../browser/media/router/mojo/media_router_mojo_impl_unittest.cc",
         "../browser/media/router/mojo/media_router_mojo_metrics_unittest.cc",
         "../browser/media/router/mojo/media_router_type_converters_unittest.cc",
+        "../browser/ui/toolbar/media_router_action_controller_unittest.cc",
         "../browser/ui/toolbar/media_router_action_unittest.cc",
         "../browser/ui/toolbar/media_router_contextual_menu_unittest.cc",
         "../browser/ui/webui/media_router/media_cast_mode_unittest.cc",