Refactor the implementation of the webNavigation extension API.

chrome/browser/extensions/api/web_navigation/web_navigation_api_helpers.h

 // 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.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_API_WEB_NAVIGATION_WEB_NAVIGATION_API_HELPERS_H_
 #define CHROME_BROWSER_EXTENSIONS_API_WEB_NAVIGATION_WEB_NAVIGATION_API_HELPERS_H_
 
 #include <string>
 
 #include "extensions/browser/extension_event_histogram_value.h"
 #include "ui/base/page_transition_types.h"
 
 namespace content {
 class BrowserContext;
+class NavigationHandle;
 class RenderFrameHost;
 class WebContents;
 }
 
 class GURL;
 
 namespace extensions {
 
 namespace web_navigation_api_helpers {
 
 // Returns the frame ID as it will be passed to the extension:
 // 0 if the navigation happens in the main frame, or the frame routing ID
 // otherwise.
 int GetFrameId(content::RenderFrameHost* frame_host);
 
 // Create and dispatch the various events of the webNavigation API.
-void DispatchOnBeforeNavigate(content::WebContents* web_contents,
-                              content::RenderFrameHost* frame_host,
-                              const GURL& validated_url);
+void DispatchOnBeforeNavigate(content::NavigationHandle* navigation_handle);
 
 void DispatchOnCommitted(events::HistogramValue histogram_value,
                          const std::string& event_name,
-                         content::WebContents* web_contents,
-                         content::RenderFrameHost* frame_host,
-                         const GURL& url,
-                         ui::PageTransition transition_type);
+                         content::NavigationHandle* navigation_handle);
 
 void DispatchOnDOMContentLoaded(content::WebContents* web_contents,
                                 content::RenderFrameHost* frame_host,
                                 const GURL& url);
 
 void DispatchOnCompleted(content::WebContents* web_contents,
                          content::RenderFrameHost* frame_host,
                          const GURL& url);
 
 void DispatchOnCreatedNavigationTarget(
     content::WebContents* web_contents,
     content::BrowserContext* browser_context,
     content::RenderFrameHost* source_frame_host,
     content::WebContents* target_web_contents,
     const GURL& target_url);
 
 void DispatchOnErrorOccurred(content::WebContents* web_contents,
                              content::RenderFrameHost* frame_host,
                              const GURL& url,
                              int error_code);
+void DispatchOnErrorOccurred(content::NavigationHandle* navigation_handle);
 
 void DispatchOnTabReplaced(
     content::WebContents* old_web_contents,
     content::BrowserContext* browser_context,
     content::WebContents* new_web_contents);
 
 }  // namespace web_navigation_api_helpers
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_WEB_NAVIGATION_WEB_NAVIGATION_API_HELPERS_H_