Support auto-reload on errors.

chrome/renderer/chrome_content_renderer_client.cc

 // 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.
 
 #include "chrome/renderer/chrome_content_renderer_client.h"
 
 #include "base/command_line.h"
 #include "base/debug/crash_logging.h"
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
@@ skipping 966 matching lines @@
     return false;
   }
 
   *error_domain = LocalizedError::kHttpErrorDomain;
   return true;
 }
 
 bool ChromeContentRendererClient::ShouldSuppressErrorPage(
     content::RenderFrame* render_frame,
     const GURL& url) {
+  // Unit tests for ChromeContentRendererClient pass a NULL RenderFrame here.
+  // Unfortunately it's very difficult to construct a mock RenderView, so skip
+  // this functionality in this case.
+  if (render_frame) {
+    content::RenderView* render_view = render_frame->GetRenderView();
+    content::RenderFrame* main_render_frame = render_view->GetMainRenderFrame();
+    blink::WebFrame* web_frame = render_frame->GetWebFrame();
+    NetErrorHelper* net_error_helper = NetErrorHelper::Get(main_render_frame);
+    if (net_error_helper->ShouldSuppressErrorPage(web_frame, url))
+      return true;
+  }
   // Do not flash an error page if the Instant new tab page fails to load.
   return search_bouncer_.get() && search_bouncer_->IsNewTabPage(url);
 }
 
 void ChromeContentRendererClient::GetNavigationErrorStrings(
     content::RenderView* render_view,
     blink::WebFrame* frame,
     const blink::WebURLRequest& failed_request,
     const blink::WebURLError& error,
     std::string* error_html,
@@ skipping 424 matching lines @@
   CommandLine* command_line = CommandLine::ForCurrentProcess();
   return !command_line->HasSwitch(extensions::switches::kExtensionProcess);
 }
 
 blink::WebWorkerPermissionClientProxy*
 ChromeContentRendererClient::CreateWorkerPermissionClientProxy(
     content::RenderFrame* render_frame,
     blink::WebFrame* frame) {
   return new WorkerPermissionClientProxy(render_frame, frame);
 }