Move Extension into extensions namespace

chrome/renderer/extensions/extension_resource_request_policy.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/renderer/extensions/extension_resource_request_policy.h"
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/stringprintf.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/url_constants.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/extension_set.h"
 #include "googleurl/src/gurl.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebConsoleMessage.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebDocument.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebFrame.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebString.h"
 
+using extensions::Extension;
+
 // static
 bool ExtensionResourceRequestPolicy::CanRequestResource(
     const GURL& resource_url,
     WebKit::WebFrame* frame,
     const ExtensionSet* loaded_extensions) {
   CHECK(resource_url.SchemeIs(chrome::kExtensionScheme));
 
   const Extension* extension =
       loaded_extensions->GetExtensionOrAppByURL(ExtensionURLInfo(resource_url));
   if (!extension) {
@@ skipping 41 matching lines @@
         WebKit::WebConsoleMessage(WebKit::WebConsoleMessage::LevelError,
                                   WebKit::WebString::fromUTF8(message)));
     return false;
   }
 
   return true;
 }
 
 ExtensionResourceRequestPolicy::ExtensionResourceRequestPolicy() {
 }