Move Extension into extensions namespace

chrome/browser/extensions/extension_service.cc

 // 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.
 
 #include "chrome/browser/extensions/extension_service.h"
 
 #include <algorithm>
 #include <set>
 
 #include "base/basictypes.h"
@@ skipping 114 matching lines @@
 #if defined(OS_CHROMEOS) && defined(USE_VIRTUAL_KEYBOARD)
 #include "chrome/browser/extensions/extension_input_ui_api.h"
 #endif
 
 using base::Time;
 using content::BrowserContext;
 using content::BrowserThread;
 using content::DevToolsAgentHost;
 using content::DevToolsAgentHostRegistry;
 using content::PluginService;
+using extensions::Extension;
+using extensions::ExtensionIdSet;
+using extensions::ExtensionInfo;
+using extensions::UnloadedExtensionInfo;
 
 namespace errors = extension_manifest_errors;
 
 namespace {
 
 #if defined(OS_LINUX)
 static const int kOmniboxIconPaddingLeft = 2;
 static const int kOmniboxIconPaddingRight = 2;
 #elif defined(OS_MACOSX)
 static const int kOmniboxIconPaddingLeft = 0;
@@ skipping 2498 matching lines @@
   // To coexist with certain unit tests that don't have an IO thread message
   // loop available at ExtensionService shutdown, we lazy-initialize this
   // object so that those cases neither create nor destroy an
   // APIResourceController.
   CHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   if (!api_resource_controller_) {
     api_resource_controller_ = new extensions::APIResourceController();
   }
   return api_resource_controller_;
 }