remoting: Remove use of ALLOW_THIS_IN_INITIALIZER_LIST.

remoting/client/plugin/pepper_token_fetcher.cc

 // Copyright 2013 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 "remoting/client/plugin/pepper_token_fetcher.h"
 
 #include "remoting/client/plugin/chromoting_instance.h"
 
 namespace remoting {
 
 PepperTokenFetcher::PepperTokenFetcher(base::WeakPtr<ChromotingInstance> plugin,
                                        const std::string& host_public_key)
     : plugin_(plugin),
       host_public_key_(host_public_key),
-      ALLOW_THIS_IN_INITIALIZER_LIST(weak_factory_(this)) {
+      weak_factory_(this) {
 }
 
 PepperTokenFetcher::~PepperTokenFetcher() {
 }
 
 void PepperTokenFetcher::FetchThirdPartyToken(
     const GURL& token_url,
     const std::string& scope,
     const TokenFetchedCallback& token_fetched_callback) {
   if (plugin_) {
     token_fetched_callback_ = token_fetched_callback;
     plugin_->FetchThirdPartyToken(token_url, host_public_key_, scope,
                                   weak_factory_.GetWeakPtr());
   }
 }
 
 void PepperTokenFetcher::OnTokenFetched(
     const std::string& token, const std::string& shared_secret) {
   if (!token_fetched_callback_.is_null()) {
     token_fetched_callback_.Run(token, shared_secret);
     token_fetched_callback_.Reset();
   }
 }
 
 }  // namespace remoting