Implement onCompleted event for the webNavigation API

chrome/browser/tab_contents/tab_contents.h

 // 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.
 
 #ifndef CHROME_BROWSER_TAB_CONTENTS_TAB_CONTENTS_H_
 #define CHROME_BROWSER_TAB_CONTENTS_TAB_CONTENTS_H_
 #pragma once
 
 #include "build/build_config.h"
 
@@ skipping 899 matching lines @@
   virtual void DidDisplayInsecureContent();
   virtual void DidRunInsecureContent(const std::string& security_origin);
   virtual void DidFailProvisionalLoadWithError(
       RenderViewHost* render_view_host,
       long long frame_id,
       bool is_main_frame,
       int error_code,
       const GURL& url,
       bool showing_repost_interstitial);
   virtual void DocumentLoadedInFrame(long long frame_id);
+  virtual void DidFinishLoad(long long frame_id);
 
   // RenderViewHostDelegate implementation.
   virtual RenderViewHostDelegate::View* GetViewDelegate();
   virtual RenderViewHostDelegate::RendererManagement*
       GetRendererManagementDelegate();
   virtual RenderViewHostDelegate::BrowserIntegration*
       GetBrowserIntegrationDelegate();
   virtual RenderViewHostDelegate::Resource* GetResourceDelegate();
   virtual RenderViewHostDelegate::ContentSettings* GetContentSettingsDelegate();
   virtual RenderViewHostDelegate::Save* GetSaveDelegate();
@@ skipping 388 matching lines @@
   // Content restrictions, used to disable print/copy etc based on content's
   // (full-page plugins for now only) permissions.
   int content_restrictions_;
 
   // ---------------------------------------------------------------------------
 
   DISALLOW_COPY_AND_ASSIGN(TabContents);
 };
 
 #endif  // CHROME_BROWSER_TAB_CONTENTS_TAB_CONTENTS_H_