Move small c/b/extensions classes into extensions namespace no.1

chrome/browser/extensions/autoupdate_interceptor.cc

 // Copyright (c) 2011 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/browser/extensions/autoupdate_interceptor.h"
 
 #include "base/bind.h"
 #include "base/file_util.h"
 #include "base/threading/thread_restrictions.h"
 #include "content/public/browser/browser_thread.h"
 #include "net/url_request/url_request_test_job.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using content::BrowserThread;
 
+namespace extensions {
+
 // This is a specialized version of net::URLRequestTestJob that lets us specify
 // response data and make sure the response code is 200, which the autoupdate
 // code relies on.
 class AutoUpdateTestRequestJob : public net::URLRequestTestJob {
  public:
   AutoUpdateTestRequestJob(net::URLRequest* request,
                            const std::string& response_data)
       : net::URLRequestTestJob(request,
                                net::URLRequestTestJob::test_headers(),
                                response_data,
@@ skipping 58 matching lines @@
   responses_[gurl] = path;
 }
 
 
 void AutoUpdateInterceptor::SetResponseOnIOThread(const std::string url,
                                                   const FilePath& path) {
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE,
       base::Bind(&AutoUpdateInterceptor::SetResponse, this, url, path));
 }
+
+}  // namespace extensions