Move the "extension" namespace from extension_api.json into extension_api_extension.json.

chrome/renderer/extensions/extension_dispatcher.h

 // Copyright (c) 2011 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 134 matching lines @@
 
   scoped_ptr<UserScriptSlave> user_script_slave_;
 
   // Same as above, but on a longer timer and will run even if the process is
   // not idle, to ensure that IdleHandle gets called eventually.
   base::RepeatingTimer<content::RenderThread> forced_idle_timer_;
 
   // The v8 extensions which are restricted to extension-related contexts.
   std::set<std::string> restricted_v8_extensions_;
 
-  // All declared function names from extension_api.json.
+  // All declared function names.
   std::set<std::string> function_names_;
 
   // The extensions that are active in this process.
   std::set<std::string> active_extension_ids_;
 
   // The applications that are active in this process.
   std::set<std::string> active_application_ids_;
 
   // True once WebKit has been initialized (and it is therefore safe to poke).
   bool is_webkit_initialized_;
 
   std::string test_extension_id_;
 
   // Status of webrequest usage for known extensions.
   // TODO(mpcomplete): remove. http://crbug.com/100411
   bool webrequest_adblock_;
   bool webrequest_adblock_plus_;
   bool webrequest_other_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionDispatcher);
 };
 
 #endif  // CHROME_RENDERER_EXTENSIONS_EXTENSION_DISPATCHER_H_