[Media Router] Show user email in header if cloud sink is present.

chrome/browser/ui/webui/media_router/media_router_webui_message_handler.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_WEBUI_MEDIA_ROUTER_MEDIA_ROUTER_WEBUI_MESSAGE_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_MEDIA_ROUTER_MEDIA_ROUTER_WEBUI_MESSAGE_HANDLER_H_
 
 #include <vector>
 
 #include "base/macros.h"
 #include "chrome/browser/media/router/issue.h"
 #include "chrome/browser/ui/webui/media_router/media_cast_mode.h"
 #include "chrome/browser/ui/webui/media_router/media_sink_with_cast_modes.h"
+#include "components/signin/core/browser/account_info.h"
 #include "content/public/browser/web_ui_message_handler.h"
 #include "ui/gfx/geometry/size.h"
 
 namespace base {
 class DictionaryValue;
 class ListValue;
 }  // namespace base
 
 namespace content {
 class WebUI;
@@ skipping 58 matching lines @@
   // |args| contains additional parameter that varies based on |type|.
   // Returns |true| if the action was successfully performed.
   bool ActOnIssueType(const IssueAction::Type& type,
                       const base::DictionaryValue* args);
 
   // May update the first run flow related properties in the WebUI. This is
   // called after the initial data is received to avoid unnecessary work when
   // initializing the WebUI.
   void MaybeUpdateFirstRunFlowData();
 
+  // Retrieve the account info for email and domain of signed in users. This is
+  // used when updating sinks to determine if identity should be displayed.
+  // Marked virtual for tests.
+  virtual AccountInfo GetAccountInfo();
+
   // Keeps track of whether a command to close the dialog has been issued.
   bool dialog_closing_;
 
   MediaRouterUI* media_router_ui_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaRouterWebUIMessageHandler);
 };
 
 }  // namespace media_router
 
 #endif  // CHROME_BROWSER_UI_WEBUI_MEDIA_ROUTER_MEDIA_ROUTER_WEBUI_MESSAGE_HANDLER_H_