Fix bug where transient pages would miss events dispatched while it was

chrome/renderer/extensions/extension_helper.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_RENDERER_EXTENSIONS_EXTENSION_HELPER_H_
 #define CHROME_RENDERER_EXTENSIONS_EXTENSION_HELPER_H_
 #pragma once
 
 #include <map>
 #include <vector>
@@ skipping 18 matching lines @@
 namespace webkit_glue {
 class ResourceFetcher;
 class ImageResourceFetcher;
 }
 
 // RenderView-level plumbing for extension features.
 class ExtensionHelper
     : public content::RenderViewObserver,
       public content::RenderViewObserverTracker<ExtensionHelper> {
  public:
+  // Returns a list of extension RenderViews that match the given filter
+  // criteria. If |browser_window_id| is not extension_misc::kUnknownWindowId,
+  // the list is restricted to views in that browser window.
+  static std::vector<content::RenderView*> GetExtensionViews(
+      const std::string& extension_id,
+      int browser_window_id,
+      content::ViewType view_type);
+
+  // Returns the given extension's background page, or NULL if none.
+  static content::RenderView* GetBackgroundPage(
+      const std::string& extension_id);
+
   ExtensionHelper(content::RenderView* render_view,
                   ExtensionDispatcher* extension_dispatcher);
   virtual ~ExtensionHelper();
 
   // Starts installation of the page in the specified frame as a web app. The
   // page must link to an external 'definition file'. This is different from
   // the 'application shortcuts' feature where we pull the application
   // definition out of optional meta tags in the page.
   bool InstallWebApplicationUsingDefinitionFile(WebKit::WebFrame* frame,
                                                 string16* error);
@@ skipping 68 matching lines @@
   // Type of view attached with RenderView.
   content::ViewType view_type_;
 
   // Id number of browser window which RenderView is attached to.
   int browser_window_id_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionHelper);
 };
 
 #endif  // CHROME_RENDERER_EXTENSIONS_EXTENSION_HELPER_H_