Send an webNavigation.onErrorOccurred when a load fails after the initial navigation was committed

chrome/browser/extensions/api/web_navigation/web_navigation_api.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.
 
 // Implements the Chrome Extensions WebNavigation API.
 
 #include "chrome/browser/extensions/api/web_navigation/web_navigation_api.h"
 
 #include "base/json/json_writer.h"
 #include "base/lazy_instance.h"
@@ skipping 709 matching lines @@
     return;
   navigation_state_.SetNavigationCompleted(frame_id);
   DCHECK_EQ(navigation_state_.GetUrl(frame_id), validated_url);
   DCHECK_EQ(navigation_state_.IsMainFrame(frame_id), is_main_frame);
   DispatchOnCompleted(web_contents(),
                       validated_url,
                       is_main_frame,
                       frame_id);
 }
 
+void WebNavigationTabObserver::DidFailLoad(
+    int64 frame_id,
+    const GURL& validated_url,
+    bool is_main_frame,
+    int error_code,
+    const string16& error_description) {
+  if (!navigation_state_.CanSendEvents(frame_id))
+    return;
+  navigation_state_.SetErrorOccurredInFrame(frame_id);
+  DispatchOnErrorOccurred(
+      web_contents(), validated_url, frame_id, is_main_frame, error_code);
+}
+
 void WebNavigationTabObserver::DidOpenRequestedURL(
     WebContents* new_contents,
     const GURL& url,
     const content::Referrer& referrer,
     WindowOpenDisposition disposition,
     content::PageTransition transition,
     int64 source_frame_id) {
   if (!navigation_state_.CanSendEvents(source_frame_id))
     return;
 
@@ skipping 129 matching lines @@
     frame->frame_id = GetFrameId(navigation_state.IsMainFrame(frame_id),
                                  frame_id);
     frame->error_occurred = navigation_state.GetErrorOccurredInFrame(frame_id);
     result_list.push_back(frame);
   }
   SetResult(GetAllFrames::Result::Create(result_list));
   return true;
 }
 
 }  // namespace extensions