[Media Router] Add MediaSink subtypes

chrome/browser/media/router/BUILD.gn

 # Copyright 2015 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 #
 
 import("//mojo/public/tools/bindings/mojom.gni")
 import("//testing/test.gni")
 
 static_library("router") {
   deps = [
     "//base",
     "//chrome/common:constants",
     "//components/keyed_service/content",
     "//components/keyed_service/core",
     "//content/public/browser",
     "//content/public/common",
     "//third_party/icu",
     "//url",
   ]
   sources = [
     "browser_presentation_connection_proxy.cc",
     "browser_presentation_connection_proxy.h",
     "create_presentation_connection_request.cc",
     "create_presentation_connection_request.h",
+    "discovery/media_sink_internal.cc",
+    "discovery/media_sink_internal.h",
     "issue.cc",
     "issue.h",
     "issue_manager.cc",
     "issue_manager.h",
     "issues_observer.cc",
     "issues_observer.h",
     "media_route.cc",
     "media_route.h",
     "media_router.h",
     "media_router_base.cc",
@@ skipping 62 matching lines @@
   }
 }
 
 mojom("mojo_bindings") {
   sources = [
     "mojo/media_router.mojom",
   ]
 
   public_deps = [
     "//mojo/common:common_custom_types",
+    "//url/mojo:url_mojom_gurl",
     "//url/mojo:url_mojom_origin",
   ]
 }
 
+mojom("mojo_test_interfaces") {
+  sources = [
+    "mojo/media_router_traits_test_service.mojom",
+  ]
+
+  public_deps = [
+    ":mojo_bindings",
+  ]
+}
+
 static_library("test_support") {
   testonly = true
   deps = [
     ":router",
     "//chrome/test:test_support",
     "//testing/gmock",
   ]
   sources = [
     "mock_media_router.cc",
     "mock_media_router.h",
     "mock_screen_availability_listener.cc",
     "mock_screen_availability_listener.h",
     "test_helper.cc",
     "test_helper.h",
   ]
 
   if (!is_android) {
     deps += [
       ":mojo_bindings",
+      ":mojo_test_interfaces",
       "//extensions/common",
     ]
     sources += [
       "mojo/media_router_mojo_test.cc",
       "mojo/media_router_mojo_test.h",
     ]
   }
 }