This adds some plumbing for propagating the status and error code of a

chrome/browser/web_resource/web_resource_service.cc

 // Copyright (c) 2010 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/browser/web_resource/web_resource_service.h"
 
 #include "base/command_line.h"
 #include "base/file_path.h"
 #include "base/string_util.h"
 #include "base/string_number_conversions.h"
@@ skipping 120 matching lines @@
       } else {
         OnUnpackWebResourceFailed(unpacker.error_message());
       }
     }
   }
 
  private:
   ~UnpackerClient() {}
 
   // UtilityProcessHost::Client
-  virtual void OnProcessCrashed() {
+  virtual void OnProcessCrashed(int exit_code) {
     if (got_response_)
       return;
 
     OnUnpackWebResourceFailed(
         "Chrome crashed while trying to retrieve web resources.");
   }
 
   virtual void OnUnpackWebResourceSucceeded(
       const DictionaryValue& parsed_json) {
     web_resource_service_->OnWebResourceUnpacked(parsed_json);
@@ skipping 206 matching lines @@
   if (!(old_logo_start == logo_start) ||
       !(old_logo_end == logo_end)) {
     prefs_->SetReal(prefs::kNTPCustomLogoStart, logo_start);
     prefs_->SetReal(prefs::kNTPCustomLogoEnd, logo_end);
     NotificationService* service = NotificationService::current();
     service->Notify(NotificationType::BROWSER_THEME_CHANGED,
                     Source<WebResourceService>(this),
                     NotificationService::NoDetails());
   }
 }