Make EventBindings use static routed methods.

chrome/renderer/extensions/extension_dispatcher.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_DISPATCHER_H_
 #define CHROME_RENDERER_EXTENSIONS_EXTENSION_DISPATCHER_H_
 #pragma once
 
 #include <set>
 #include <string>
@@ skipping 245 matching lines @@
   // them.
   std::map<std::string, BindingInstaller> lazy_bindings_map_;
 
   // Sends API requests to the extension host.
   scoped_ptr<ExtensionRequestSender> request_sender_;
 
   // The current channel. From VersionInfo::GetChannel().
   // TODO(aa): Remove when we can restrict non-permission APIs to dev-only.
   int chrome_channel_;
 
-  // Routes events to the appropriate listener taking into consideration event
-  // filters.
-  scoped_ptr<extensions::EventFilter> event_filter_;
-
   DISALLOW_COPY_AND_ASSIGN(ExtensionDispatcher);
 };
 
 #endif  // CHROME_RENDERER_EXTENSIONS_EXTENSION_DISPATCHER_H_