Surface button for loading stale cache copy on net error page.

chrome/renderer/net/net_error_helper.h

 // Copyright (c) 2013 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_RENDERER_NET_NET_ERROR_HELPER_H_
 #define CHROME_RENDERER_NET_NET_ERROR_HELPER_H_
 
 #include <string>
 
 #include "base/macros.h"
@@ skipping 22 matching lines @@
 // DNS probe results) if/when available.
 class NetErrorHelper
     : public content::RenderFrameObserver,
       public content::RenderFrameObserverTracker<NetErrorHelper>,
       public content::RenderProcessObserver,
       public NetErrorHelperCore::Delegate {
  public:
   explicit NetErrorHelper(content::RenderFrame* render_view);
   virtual ~NetErrorHelper();
 
+  // Button press notification from error page.
+  void ReloadButtonPressed();
+  void LoadStaleButtonPressed();
+  void MoreButtonPressed();
+
   // RenderFrameObserver implementation.
   virtual void DidStartProvisionalLoad() OVERRIDE;
   virtual void DidCommitProvisionalLoad(bool is_new_navigation) OVERRIDE;
   virtual void DidFinishLoad() OVERRIDE;
   virtual void OnStop() OVERRIDE;
 
   // IPC::Listener implementation.
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
 
   // RenderProcessObserver implementation.
@@ skipping 15 matching lines @@
   // Returns whether a load for |url| in |frame| should have its error page
   // suppressed.
   bool ShouldSuppressErrorPage(blink::WebFrame* frame, const GURL& url);
 
  private:
   // NetErrorHelperCore::Delegate implementation:
   virtual void GenerateLocalizedErrorPage(
       const blink::WebURLError& error,
       bool is_failed_post,
       scoped_ptr<LocalizedError::ErrorPageParams> params,
+      bool* reload_button_shown,
+      bool* load_stale_button_shown,
       std::string* html) const OVERRIDE;
   virtual void LoadErrorPageInMainFrame(const std::string& html,
                                         const GURL& failed_url) OVERRIDE;
-  virtual void EnableStaleLoadBindings(const GURL& page_url) OVERRIDE;
+  virtual void EnablePageHelperFunctions() OVERRIDE;
   virtual void UpdateErrorPage(const blink::WebURLError& error,
                                bool is_failed_post) OVERRIDE;
   virtual void FetchNavigationCorrections(
       const GURL& navigation_correction_url,
       const std::string& navigation_correction_request_body) OVERRIDE;
   virtual void CancelFetchNavigationCorrections() OVERRIDE;
   virtual void ReloadPage() OVERRIDE;
+  virtual void LoadPageFromCache(const GURL& page_url) OVERRIDE;
 
   void OnNetErrorInfo(int status);
   void OnSetNavigationCorrectionInfo(const GURL& navigation_correction_url,
                                      const std::string& language,
                                      const std::string& country_code,
                                      const std::string& api_key,
                                      const GURL& search_url);
 
   void OnNavigationCorrectionsFetched(const blink::WebURLResponse& response,
                                       const std::string& data);
 
   scoped_ptr<content::ResourceFetcher> correction_fetcher_;
 
   NetErrorHelperCore core_;
 
   DISALLOW_COPY_AND_ASSIGN(NetErrorHelper);
 };
 
 #endif  // CHROME_RENDERER_NET_NET_ERROR_HELPER_H_