Implement the onBeforeRetarget event of the webNavigation API

chrome/browser/extensions/extension_webnavigation_api.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.
 
 // Defines the Chrome Extensions WebNavigation API functions for observing and
 // intercepting navigation events, as specified in
 // chrome/common/extensions/api/extension_api.json.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_EXTENSION_WEBNAVIGATION_API_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_WEBNAVIGATION_API_H_
 #pragma once
 
 #include <map>
 
 #include "base/singleton.h"
 #include "chrome/browser/extensions/extension_function.h"
 #include "chrome/common/notification_observer.h"
 #include "chrome/common/notification_registrar.h"
 #include "googleurl/src/gurl.h"
 
 class NavigationController;
 class ProvisionalLoadDetails;
 class TabContents;
+struct ViewHostMsg_CreateWindow_Params;
 
 // Tracks the navigation state of all frames currently known to the
 // webNavigation API. It is mainly used to track in which frames an error
 // occurred so no further events for this frame are being sent.
 class FrameNavigationState {
  public:
   FrameNavigationState();
   ~FrameNavigationState();
 
   // True if navigation events for the given frame can be sent.
@@ skipping 80 matching lines @@
   // Handler for the FRAME_DID_FINISH_LOAD event. The method takes the frame
   // ID and constructs a suitable JSON formatted extension event from it.
   void FrameDidFinishLoad(NavigationController* controller, int64 frame_id);
 
   // Handler for the FAIL_PROVISIONAL_LOAD_WITH_ERROR event. The method takes
   // the details of such an event and constructs a suitable JSON formatted
   // extension event from it.
   void FailProvisionalLoadWithError(NavigationController* controller,
                                     ProvisionalLoadDetails* details);
 
+  // Handler for the CREATING_NEW_WINDOW event. The method takes the details of
+  // such an event and constructs a suitable JSON formatted extension event from
+  // it.
+  void CreatingNewWindow(TabContents* tab_content,
+                         const ViewHostMsg_CreateWindow_Params* details);
+
   // Dispatches events to the extension message service.
   void DispatchEvent(Profile* context,
                      const char* event_name,
                      const std::string& json_args);
 
   // Tracks the state of the frames we are sending events for.
   FrameNavigationState navigation_state_;
 
   // Used for tracking registrations to navigation notifications.
   NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionWebNavigationEventRouter);
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_WEBNAVIGATION_API_H_