[Media Router] Unit tests for sticky cast modes

chrome/browser/ui/webui/media_router/media_router_ui.cc

 // 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.
 
 #include "chrome/browser/ui/webui/media_router/media_router_ui.h"
 
 #include <algorithm>
 #include <string>
 #include <unordered_map>
 #include <utility>
@@ skipping 707 matching lines @@
 }
 
 std::string MediaRouterUI::GetTruncatedPresentationRequestSourceName() const {
   GURL gurl = GetFrameURL();
   return gurl.SchemeIs(extensions::kExtensionScheme)
              ? GetExtensionName(gurl, extensions::ExtensionRegistry::Get(
                                           Profile::FromWebUI(web_ui())))
              : TruncateHost(GetHostFromURL(gurl));
 }
 
+const std::set<MediaCastMode>& MediaRouterUI::cast_modes() const {
+  return cast_modes_;
+}
+
 const std::string& MediaRouterUI::GetRouteProviderExtensionId() const {
   // TODO(crbug.com/597778): remove reference to MediaRouterMojoImpl
   return static_cast<MediaRouterMojoImpl*>(router_)
       ->media_route_provider_extension_id();
 }
 
 void MediaRouterUI::SetUIInitializationTimer(const base::Time& start_time) {
   DCHECK(!start_time.is_null());
   start_time_ = start_time;
 }
@@ skipping 18 matching lines @@
 }
 
 std::string MediaRouterUI::GetSerializedInitiatorOrigin() const {
   url::Origin origin = initiator_
                            ? url::Origin(initiator_->GetLastCommittedURL())
                            : url::Origin();
   return origin.Serialize();
 }
 
 }  // namespace media_router