Remove task.h and finish base::Bind() migration.

chrome/common/net/gaia/gaia_oauth_client.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/common/net/gaia/gaia_oauth_client.h"
 
 #include "base/json/json_reader.h"
+#include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/values.h"
 #include "chrome/common/net/http_return.h"
 #include "content/public/common/url_fetcher.h"
 #include "content/public/common/url_fetcher_delegate.h"
 #include "googleurl/src/gurl.h"
 #include "net/base/escape.h"
 #include "net/url_request/url_request_context_getter.h"
 
 namespace {
@@ skipping 179 matching lines @@
                                    const std::string& refresh_token,
                                    int max_retries,
                                    Delegate* delegate) {
   return core_->RefreshToken(oauth_client_info,
                              refresh_token,
                              max_retries,
                              delegate);
 }
 
 }  // namespace gaia