[Media Router] Add DialMediaSinkService and DeviceDescriptionService

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",
+    "//third_party/libxml",

[mark a. foltz, 2017/03/11 00:08:15]

Per our chat, I think we'll have to wait until there is a utility process
available to do XML parsing.  

[zhaobin, 2017/03/28 13:36:59]

Done.

     "//url",
   ]
   sources = [
     "browser_presentation_connection_proxy.cc",
     "browser_presentation_connection_proxy.h",
     "create_presentation_connection_request.cc",
     "create_presentation_connection_request.h",
+    "device_description_service.cc",
+    "device_description_service.h",
+    "dial_media_sink_cache_service.cc",
+    "dial_media_sink_cache_service.h",
+    "dial_media_sink_service.cc",
+    "dial_media_sink_service.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",
@@ skipping 87 matching lines @@
 }
 
 static_library("test_support") {
   testonly = true
   deps = [
     ":router",
     "//chrome/test:test_support",
     "//testing/gmock",
   ]
   sources = [
+    "mock_device_description_service.cc",
+    "mock_device_description_service.h",
     "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",
     ]
   }
 }