Support auto-reload on errors.

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 "chrome/common/net/net_error_info.h"
 #include "chrome/renderer/net/net_error_helper_core.h"
 #include "content/public/renderer/render_frame_observer.h"
 #include "content/public/renderer/render_frame_observer_tracker.h"
+#include "content/public/renderer/render_process_observer.h"
 
 class GURL;
+class MockableOneShotTimer;
 
 namespace content {
 class ResourceFetcher;
 }
 
 namespace blink {
 class WebFrame;
 class WebURLResponse;
 struct WebURLError;
 }
 
 // Listens for NetErrorInfo messages from the NetErrorTabHelper on the
 // browser side and updates the error page with more details (currently, just
 // 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);
+  explicit NetErrorHelper(content::RenderFrame* render_view,
+                          bool auto_reload_enabled);

[Randy Smith (Not in Mondays), 2014/02/06 16:47:16]

Given that there aren't any tests currently in this CL that test NetErrorHelper
(as separate from NetErrorHelperCore), why don't we get rid of this argument and
simply initialize NEHC from the value of the command line flag?

   virtual ~NetErrorHelper();
 
   // 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.
+  virtual void NetworkStateChanged(bool online) OVERRIDE;
+
   // Examines |frame| and |error| to see if this is an error worthy of a DNS
   // probe.  If it is, initializes |error_strings| based on |error|,
   // |is_failed_post|, and |locale| with suitable strings and returns true.
   // If not, returns false, in which case the caller should look up error
   // strings directly using LocalizedError::GetNavigationErrorStrings.
   //
   // Updates the NetErrorHelper with the assumption the page will be loaded
   // immediately.
   void GetErrorHTML(blink::WebFrame* frame,
                     const blink::WebURLError& error,
                     bool is_failed_post,
                     std::string* error_html);
 
  private:
   // NetErrorHelperCore::Delegate implementation:
   virtual void GenerateLocalizedErrorPage(const blink::WebURLError& error,
                                           bool is_failed_post,
                                           std::string* html) const OVERRIDE;
   virtual void LoadErrorPageInMainFrame(const std::string& html,
                                         const GURL& failed_url) OVERRIDE;
   virtual void UpdateErrorPage(const blink::WebURLError& error,
                                bool is_failed_post) OVERRIDE;
   virtual void FetchErrorPage(const GURL& url) OVERRIDE;
   virtual void CancelFetchErrorPage() OVERRIDE;
+  virtual void ReloadPage() OVERRIDE;
+  virtual MockableOneShotTimer* NewMockableOneShotTimer() OVERRIDE;
 
   void OnNetErrorInfo(int status);
   void OnSetAltErrorPageURL(const GURL& alternate_error_page_url);
 
   void OnAlternateErrorPageRetrieved(const blink::WebURLResponse& response,
                                      const std::string& data);
 
   scoped_ptr<content::ResourceFetcher> alt_error_page_fetcher_;
+  scoped_ptr<content::ResourceFetcher> auto_reload_page_fetcher_;

[mmenke, 2014/02/05 23:31:43]

Not used.

[Elly Fong-Jones, 2014/02/10 21:42:06]

Done.

 
   NetErrorHelperCore core_;
 };
 
 #endif  // CHROME_RENDERER_NET_NET_ERROR_HELPER_H_