Coalesce event router Init calls into their constructors.

chrome/browser/extensions/api/web_navigation/web_navigation_api.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.
 
 // Defines the Chrome Extensions WebNavigation API functions for observing and
 // intercepting navigation events, as specified in the extension JSON API.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_API_WEB_NAVIGATION_WEB_NAVIGATION_API_H_
 #define CHROME_BROWSER_EXTENSIONS_API_WEB_NAVIGATION_WEB_NAVIGATION_API_H_
 
@@ skipping 120 matching lines @@
 
 // Observes navigation notifications and routes them as events to the extension
 // system.
 class WebNavigationEventRouter : public TabStripModelObserver,
                                  public chrome::BrowserListObserver,
                                  public content::NotificationObserver {
  public:
   explicit WebNavigationEventRouter(Profile* profile);
   virtual ~WebNavigationEventRouter();
 
-  // Invoked by the extensions service once the extension system is fully set
-  // up and can start dispatching events to extensions.
-  void Init();
-
  private:
   // Used to cache the information about newly created WebContents objects.
   struct PendingWebContents{
     PendingWebContents();
     PendingWebContents(content::WebContents* source_web_contents,
                        int64 source_frame_id,
                        bool source_frame_is_main_frame,
                        content::WebContents* target_web_contents,
                        const GURL& target_url);
     ~PendingWebContents();
@@ skipping 56 matching lines @@
 // API function that returns the states of all frames in a given tab.
 class GetAllFramesFunction : public SyncExtensionFunction {
   virtual ~GetAllFramesFunction() {}
   virtual bool RunImpl() OVERRIDE;
   DECLARE_EXTENSION_FUNCTION_NAME("webNavigation.getAllFrames")
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_WEB_NAVIGATION_WEB_NAVIGATION_API_H_