Move Extension into extensions namespace

chrome/common/extensions/manifest_tests/extension_manifests_web_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 "chrome/common/extensions/manifest_tests/extension_manifest_test.h"
 
 #include "base/string_number_conversions.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/common/extensions/extension_error_utils.h"
 #include "chrome/common/extensions/extension_manifest_constants.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "webkit/glue/web_intent_service_data.h"
 
+using extensions::Extension;
+
 namespace errors = extension_manifest_errors;
 
 TEST_F(ExtensionManifestTest, WebAccessibleResources) {
   // Manifest version 2 with web accessible resources specified.
   scoped_refptr<Extension> extension1(
       LoadAndExpectSuccess("web_accessible_resources_1.json"));
 
   // Manifest version 2 with no web accessible resources.
   scoped_refptr<Extension> extension2(
       LoadAndExpectSuccess("web_accessible_resources_2.json"));
@@ skipping 201 matching lines @@
                EXPECT_TYPE_ERROR);
 
   LoadAndExpectSuccess("web_urls_has_port.json");
 
   scoped_refptr<Extension> extension(
       LoadAndExpectSuccess("web_urls_default.json"));
   ASSERT_EQ(1u, extension->web_extent().patterns().size());
   EXPECT_EQ("*://www.google.com/*",
             extension->web_extent().patterns().begin()->GetAsString());
 }