Move Extension into extensions namespace

chrome/common/extensions/manifest_tests/extension_manifests_homepage_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 "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/extension_manifest_constants.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/base/l10n/l10n_util.h"
 
 namespace errors = extension_manifest_errors;
 
 TEST_F(ExtensionManifestTest, ParseHomepageURLs) {
-  scoped_refptr<Extension> extension(
+  scoped_refptr<extensions::Extension> extension(
       LoadAndExpectSuccess("homepage_valid.json"));
 
   Testcase testcases[] = {
     Testcase("homepage_empty.json",
              errors::kInvalidHomepageURL),
     Testcase("homepage_invalid.json",
              errors::kInvalidHomepageURL),
     Testcase("homepage_bad_schema.json",
              errors::kInvalidHomepageURL)
   };
   RunTestcases(testcases, arraysize(testcases),
                EXPECT_TYPE_ERROR);
 }
 
 TEST_F(ExtensionManifestTest, GetHomepageURL) {
-  scoped_refptr<Extension> extension(
+  scoped_refptr<extensions::Extension> extension(
       LoadAndExpectSuccess("homepage_valid.json"));
   EXPECT_EQ(GURL("http://foo.com#bar"), extension->GetHomepageURL());
 
   // The Google Gallery URL ends with the id, which depends on the path, which
   // can be different in testing, so we just check the part before id.
   extension = LoadAndExpectSuccess("homepage_google_hosted.json");
   EXPECT_TRUE(StartsWithASCII(extension->GetHomepageURL().spec(),
                               "https://chrome.google.com/webstore/detail/",
                               false));
 
   extension = LoadAndExpectSuccess("homepage_externally_hosted.json");
   EXPECT_EQ(GURL(), extension->GetHomepageURL());
 }