Move Extension into extensions namespace

chrome/browser/extensions/extension_tab_helper.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_tab_helper.h"
 
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/page_action_controller.h"
 #include "chrome/browser/extensions/script_badge_controller.h"
 #include "chrome/browser/extensions/script_executor_impl.h"
@@ skipping 13 matching lines @@
 #include "content/public/browser/invalidate_type.h"
 #include "content/public/browser/navigation_details.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/render_widget_host_view.h"
 #include "content/public/browser/web_contents.h"
 #include "ui/gfx/image/image.h"
 
 using content::WebContents;
+using extensions::Extension;
 using extensions::ScriptBadgeController;
 using extensions::ScriptExecutorImpl;
 using extensions::PageActionController;
 
 namespace {
 
 const char kPermissionError[] = "permission_error";
 
 }  // namespace
 
@@ skipping 334 matching lines @@
 void ExtensionTabHelper::OnInlineInstallFailure(int install_id,
                                                 int return_route_id,
                                                 const std::string& error) {
   Send(new ExtensionMsg_InlineWebstoreInstallResponse(
       return_route_id, install_id, false, error));
 }
 
 WebContents* ExtensionTabHelper::GetAssociatedWebContents() const {
   return web_contents();
 }