ios: Remove use of MessageLoopProxy and deprecated MessageLoop APIs

ios/net/cookies/cookie_store_ios.mm

 // Copyright 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 "ios/net/cookies/cookie_store_ios.h"
 
 #import <Foundation/Foundation.h>
 
 #include "base/bind.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/ios/ios_util.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/mac/foundation_util.h"
 #include "base/mac/scoped_nsobject.h"
 #include "base/memory/weak_ptr.h"
-#include "base/message_loop/message_loop_proxy.h"
 #include "base/metrics/histogram.h"
 #include "base/observer_list.h"
 #include "base/sequenced_task_runner.h"
 #include "base/stl_util.h"
 #include "base/strings/sys_string_conversions.h"
 #include "base/task_runner_util.h"
+#include "base/thread_task_runner_handle.h"
 #include "base/threading/thread_restrictions.h"
 #include "ios/net/cookies/cookie_creation_time_manager.h"
 #include "ios/net/cookies/cookie_store_ios_client.h"
 #include "ios/net/cookies/system_cookie_util.h"
 #import "net/base/mac/url_conversions.h"
 #include "net/cookies/cookie_util.h"
 #include "url/gurl.h"
 
 namespace net {
 
@@ skipping 756 matching lines @@
       RunCallbacksForCookies(key.first, key.second, added_cookies, false);
     }
   }
 
   // Do not schedule a flush if one is already scheduled.
   if (!flush_closure_.IsCancelled())
     return;
 
   flush_closure_.Reset(base::Bind(&CookieStoreIOS::Flush,
                                   base::Unretained(this), base::Closure()));
-  base::MessageLoopProxy::current()->PostDelayedTask(
+  base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
       FROM_HERE, flush_closure_.callback(), flush_delay_);
 }
 
 scoped_ptr<net::CookieStore::CookieChangedSubscription>
 CookieStoreIOS::AddCallbackForCookie(const GURL& gurl,
                                      const std::string& name,
                                      const CookieChangedCallback& callback) {
   DCHECK(thread_checker_.CalledOnValidThread());
 
   // Prefill cookie cache with all pertinent cookies for |url| if needed.
@@ skipping 140 matching lines @@
   DCHECK(thread_checker_.CalledOnValidThread());
   return base::Bind(&CookieStoreIOS::UpdateCachesAfterDelete, this, callback);
 }
 
 base::Closure CookieStoreIOS::WrapClosure(const base::Closure& callback) {
   DCHECK(thread_checker_.CalledOnValidThread());
   return base::Bind(&CookieStoreIOS::UpdateCachesAfterClosure, this, callback);
 }
 
 }  // namespace net