Support auto-reload on errors.

chrome/renderer/chrome_content_renderer_client.cc

Index: chrome/renderer/chrome_content_renderer_client.cc
diff --git a/chrome/renderer/chrome_content_renderer_client.cc b/chrome/renderer/chrome_content_renderer_client.cc
index 870b7a343ea0929f3c26459f7398182068edf139..b4bfe6117627e10766053e6c55ca9275c197758d 100644
--- a/chrome/renderer/chrome_content_renderer_client.cc
+++ b/chrome/renderer/chrome_content_renderer_client.cc
@@ -351,6 +351,9 @@ void ChromeContentRendererClient::RenderThreadStarted() {
   WebSecurityPolicy::registerURLSchemeAsBypassingContentSecurityPolicy(
       extension_resource_scheme);
 
+  auto_reload_enabled_ =
+      command_line->HasSwitch(switches::kEnableOfflineAutoReload);
+
   extensions::ExtensionsClient::Set(
       extensions::ChromeExtensionsClient::GetInstance());
 }
@@ -386,7 +389,8 @@ void ChromeContentRendererClient::RenderFrameCreated(
   if (render_frame->GetRenderView()->GetMainRenderFrame() == render_frame) {
     // Only attach NetErrorHelper to the main frame, since only the main frame
     // should get error pages.
-    new NetErrorHelper(render_frame);
+    main_frame_net_error_helper_ = new NetErrorHelper(render_frame,
+                                                      auto_reload_enabled_);
   }
 }
 
@@ -968,6 +972,9 @@ bool ChromeContentRendererClient::HasErrorPage(int http_status_code,
 bool ChromeContentRendererClient::ShouldSuppressErrorPage(
     content::RenderFrame* render_frame,
     const GURL& url) {
+  if (render_frame->GetRenderView()->GetMainRenderFrame() == render_frame
+      && main_frame_net_error_helper_->ShouldSuppressErrorPage(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);
 }