[Presentation API] Add support for multiple URLs in PresentationRequest on Media Router UI side

chrome/browser/ui/BUILD.gn

 # Copyright 2014 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("//build/config/chromecast_build.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//build/split_static_library.gni")
 import("//chrome/common/features.gni")
@@ skipping 3256 matching lines @@
     sources += [
       "toolbar/media_router_action.cc",
       "toolbar/media_router_action.h",
       "toolbar/media_router_action_controller.cc",
       "toolbar/media_router_action_controller.h",
       "toolbar/media_router_action_platform_delegate.h",
       "toolbar/media_router_contextual_menu.cc",
       "toolbar/media_router_contextual_menu.h",
       "views/toolbar/media_router_action_platform_delegate_views.cc",
       "views/toolbar/media_router_action_platform_delegate_views.h",
+      "webui/media_router/cast_modes_with_media_sources.cc",
+      "webui/media_router/cast_modes_with_media_sources.h",
       "webui/media_router/media_cast_mode.cc",
       "webui/media_router/media_cast_mode.h",
       "webui/media_router/media_router_dialog_controller_impl.cc",
       "webui/media_router/media_router_dialog_controller_impl.h",
       "webui/media_router/media_router_localized_strings_provider.cc",
       "webui/media_router/media_router_localized_strings_provider.h",
       "webui/media_router/media_router_resources_provider.cc",
       "webui/media_router/media_router_resources_provider.h",
       "webui/media_router/media_router_ui.cc",
       "webui/media_router/media_router_ui.h",
@@ skipping 128 matching lines @@
       "passwords/passwords_model_delegate_mock.cc",
       "passwords/passwords_model_delegate_mock.h",
     ]
     deps += [ "//chrome/test:test_support_ui" ]
   }
 
   if (enable_extensions) {
     deps += [ "//extensions/browser" ]
   }
 }