Use vector assets for media router icons.

chrome/browser/ui/toolbar/media_router_action.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_TOOLBAR_MEDIA_ROUTER_ACTION_H_
 #define CHROME_BROWSER_UI_TOOLBAR_MEDIA_ROUTER_ACTION_H_
 
 #include "base/macros.h"
 #include "base/scoped_observer.h"
 #include "chrome/browser/media/router/issues_observer.h"
 #include "chrome/browser/media/router/media_routes_observer.h"
 #include "chrome/browser/ui/tabs/tab_strip_model_observer.h"
 #include "chrome/browser/ui/toolbar/media_router_contextual_menu.h"
 #include "chrome/browser/ui/toolbar/toolbar_action_view_controller.h"
 #include "chrome/browser/ui/toolbar/toolbar_actions_bar.h"
+#include "ui/gfx/vector_icons_public.h"
 
 class Browser;
 class MediaRouterActionPlatformDelegate;
 class TabStripModel;
 
 namespace media_router {
 class MediaRouterDialogControllerImpl;
 }  // namespace media_router
 
 // The class for the Media Router component action that will be shown in
@@ skipping 58 matching lines @@
   virtual media_router::MediaRouterDialogControllerImpl*
       GetMediaRouterDialogController();
 
   // Overridden by tests.
   virtual MediaRouterActionPlatformDelegate* GetPlatformDelegate();
 
   // Checks if the current icon of MediaRouterAction has changed. If so,
   // updates |current_icon_|.
   void MaybeUpdateIcon();
 
-  const gfx::Image* GetCurrentIcon() const;
-
-  // Cached icons.
-  // Indicates that the current Chrome profile is using at least one device.
-  const gfx::Image media_router_active_icon_;
-  // Indicates a failure, e.g. session launch failure.
-  const gfx::Image media_router_error_icon_;
-  // Indicates that the current Chrome profile is not using any devices.
-  // Devices may or may not be available.
-  const gfx::Image media_router_idle_icon_;
-  // Indicates there is a warning message.
-  const gfx::Image media_router_warning_icon_;
+  gfx::VectorIconId GetCurrentIcon() const;
 
   // The current icon to show. This is updated based on the current issues and
   // routes since |this| is an IssueObserver and MediaRoutesObserver.
-  const gfx::Image* current_icon_;
+  gfx::VectorIconId current_icon_;
 
   // The current issue shown in the Media Router WebUI. Can be null. It is set
   // in OnIssueUpdated(), which is called by the IssueManager.
   std::unique_ptr<media_router::Issue> issue_;
 
   // Whether a local displayable active route exists.
   bool has_local_display_route_;
 
   ToolbarActionViewDelegate* delegate_;
 
   Browser* const browser_;
   ToolbarActionsBar* const toolbar_actions_bar_;
 
   // The delegate to handle platform-specific implementations.
   std::unique_ptr<MediaRouterActionPlatformDelegate> platform_delegate_;
 
   MediaRouterContextualMenu contextual_menu_;
 
   ScopedObserver<TabStripModel, TabStripModelObserver>
       tab_strip_model_observer_;
 
   base::WeakPtrFactory<MediaRouterAction> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaRouterAction);
 };
 
 #endif  // CHROME_BROWSER_UI_TOOLBAR_MEDIA_ROUTER_ACTION_H_