Move Extension into extensions namespace

chrome/common/extensions/extension_file_util_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/extension_file_util.h"
 
 #include "base/file_util.h"
 #include "base/json/json_string_value_serializer.h"
 #include "base/path_service.h"
 #include "base/scoped_temp_dir.h"
 #include "base/stringprintf.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/extension_manifest_constants.h"
 #include "grit/generated_resources.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/base/l10n/l10n_util.h"
 
+using extensions::Extension;
+
 namespace keys = extension_manifest_keys;
 
 #if defined(OS_WIN)
 // http://crbug.com/106381
 #define InstallUninstallGarbageCollect DISABLED_InstallUninstallGarbageCollect
 #endif
 TEST(ExtensionFileUtil, InstallUninstallGarbageCollect) {
   ScopedTempDir temp;
   ASSERT_TRUE(temp.CreateUniqueTempDir());
 
@@ skipping 393 matching lines @@
   EXPECT_FALSE(extension_file_util::ValidateExtension(extension, &error));
   EXPECT_EQ(l10n_util::GetStringFUTF8(
       IDS_EXTENSION_LOAD_BACKGROUND_SCRIPT_FAILED,
       ASCIIToUTF16("http://google.com/foo.js")),
            error);
 }
 
 // TODO(aa): More tests as motivation allows. Maybe steal some from
 // ExtensionService? Many of them could probably be tested here without the
 // MessageLoop shenanigans.