webui: Request favicons at all required display scale factors

chrome/browser/ui/webui/chrome_web_ui_controller_factory.h

 // Copyright (c) 2012 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_CHROME_WEB_UI_CONTROLLER_FACTORY_H_
 #define CHROME_BROWSER_UI_WEBUI_CHROME_WEB_UI_CONTROLLER_FACTORY_H_
 
 #include "base/basictypes.h"
 #include "base/memory/singleton.h"
 #include "content/public/browser/web_ui.h"
@@ skipping 17 matching lines @@
                                       const GURL& url) const OVERRIDE;
   virtual bool IsURLAcceptableForWebUI(content::BrowserContext* browser_context,
                                        const GURL& url,
                                        bool data_urls_allowed) const OVERRIDE;
   virtual content::WebUIController* CreateWebUIControllerForURL(
       content::WebUI* web_ui,
       const GURL& url) const OVERRIDE;
 
   // Get the favicon for |page_url| and forward the result to the |request|
   // when loaded.
-  void GetFaviconForURL(Profile* profile,
-                        FaviconService::GetFaviconRequest* request,
-                        const GURL& page_url) const;
+  void GetFaviconForURL(
+      Profile* profile,
+      FaviconService::GetFaviconRequest* request,
+      const GURL& page_url,
+      const std::vector<ui::ScaleFactor>& scale_factors) const;
 
   static ChromeWebUIControllerFactory* GetInstance();
 
  protected:
   ChromeWebUIControllerFactory();
   virtual ~ChromeWebUIControllerFactory();
 
  private:
 
   friend struct DefaultSingletonTraits<ChromeWebUIControllerFactory>;
 
   // Gets the data for the favicon for a WebUI page. Returns NULL if the WebUI
   // does not have a favicon.
   base::RefCountedMemory* GetFaviconResourceBytes(
       const GURL& page_url, ui::ScaleFactor scale_factor) const;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeWebUIControllerFactory);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_CHROME_WEB_UI_CONTROLLER_FACTORY_H_