Do cookie checks in NetworkDelegate instead of the URLRequest::Delegate.

chrome/common/net/gaia/oauth2_access_token_fetcher.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/net/gaia/oauth2_access_token_fetcher.h"
 
 #include <algorithm>
 #include <string>
 #include <vector>
 
 #include "base/json/json_reader.h"
 #include "base/string_util.h"
 #include "base/stringprintf.h"
 #include "base/values.h"
 #include "chrome/common/net/gaia/gaia_urls.h"
 #include "chrome/common/net/gaia/google_service_auth_error.h"
+#include "content/public/common/content_url_request_user_data.h"
 #include "net/base/escape.h"
 #include "net/base/load_flags.h"
 #include "net/http/http_status_code.h"
 #include "net/url_request/url_request_context_getter.h"
 #include "net/url_request/url_request_status.h"
 
 using content::URLFetcher;
 using content::URLFetcherDelegate;
 using net::ResponseCookies;
 using net::URLRequestContextGetter;
@@ skipping 44 matching lines @@
                                  const GURL& url,
                                  const std::string& body,
                                  URLFetcherDelegate* delegate) {
   bool empty_body = body.empty();
   URLFetcher* result = URLFetcher::Create(
       0, url,
       empty_body ? URLFetcher::GET : URLFetcher::POST,
       delegate);
 
   result->SetRequestContext(getter);
+  // No user data, as the request will be cookie-less.
+  result->SetContentURLRequestUserData(
+      new content::ContentURLRequestUserData());
   result->SetLoadFlags(net::LOAD_DO_NOT_SEND_COOKIES |
                        net::LOAD_DO_NOT_SAVE_COOKIES);
 
   if (!empty_body)
     result->SetUploadData("application/x-www-form-urlencoded", body);
 
   return result;
 }
 }  // namespace
 
@@ skipping 115 matching lines @@
   std::string data;
   source->GetResponseAsString(&data);
   base::JSONReader reader;
   scoped_ptr<base::Value> value(reader.Read(data, false));
   if (!value.get() || value->GetType() != base::Value::TYPE_DICTIONARY)
     return false;
 
   DictionaryValue* dict = static_cast<DictionaryValue*>(value.get());
   return GetStringFromDictionary(dict, kAccessTokenKey, access_token);
 }