Move Extension into extensions namespace

chrome/browser/extensions/extension_info_map_unittest.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 "base/json/json_file_value_serializer.h"
 #include "base/message_loop.h"
 #include "base/path_service.h"
 #include "chrome/browser/extensions/extension_info_map.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/extension_manifest_constants.h"
 #include "content/test/test_browser_thread.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebString.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebURL.h"
 
 using content::BrowserThread;
+using extensions::Extension;
 using WebKit::WebSecurityOrigin;
 using WebKit::WebString;
 
 namespace keys = extension_manifest_keys;
 
 namespace {
 
 class ExtensionInfoMapTest : public testing::Test {
  public:
   ExtensionInfoMapTest()
@@ skipping 143 matching lines @@
   EXPECT_FALSE(match);
 
   // Sandboxed origins should not have any permissions.
   match = info_map->extensions().GetExtensionOrAppByURL(ExtensionURLInfo(
       WebSecurityOrigin::createFromString(WebString::fromUTF8("null")),
       app_url));
   EXPECT_FALSE(match);
 }
 
 }  // namespace