Move Extension into extensions namespace

chrome/common/extensions/extension_set.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/common/extensions/extension_set.h"
 
 #include "base/logging.h"
+#include "chrome/common/extensions/extension.h"
 #include "chrome/common/url_constants.h"
 
 using WebKit::WebSecurityOrigin;
+using extensions::Extension;
 
 ExtensionURLInfo::ExtensionURLInfo(WebSecurityOrigin origin, const GURL& url)
   : origin_(origin),
     url_(url) {
   DCHECK(!origin_.isNull());
 }
 
 ExtensionURLInfo::ExtensionURLInfo(const GURL& url)
   : url_(url) {
 }
@@ skipping 113 matching lines @@
 
   ExtensionMap::const_iterator i = extensions_.begin();
   for (; i != extensions_.end(); ++i) {
     if (i->second->location() == Extension::COMPONENT &&
         i->second->web_extent().MatchesURL(info.url()))
       return true;
   }
 
   return false;
 }