Revert "content: Remove use of MessageLoopProxy and deprecated MessageLoop APIs"

content/browser/cache_storage/cache_storage_scheduler.cc

 // Copyright 2015 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 "content/browser/cache_storage/cache_storage_scheduler.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/logging.h"
-#include "base/single_thread_task_runner.h"
-#include "base/thread_task_runner_handle.h"
+#include "base/message_loop/message_loop_proxy.h"
 
 namespace content {
 
 CacheStorageScheduler::CacheStorageScheduler() : operation_running_(false) {
 }
 
 CacheStorageScheduler::~CacheStorageScheduler() {
 }
 
 void CacheStorageScheduler::ScheduleOperation(const base::Closure& closure) {
@@ skipping 10 matching lines @@
 bool CacheStorageScheduler::ScheduledOperations() const {
   return operation_running_ || !pending_operations_.empty();
 }
 
 void CacheStorageScheduler::RunOperationIfIdle() {
   if (!operation_running_ && !pending_operations_.empty()) {
     operation_running_ = true;
     // TODO(jkarlin): Run multiple operations in parallel where allowed.
     base::Closure closure = pending_operations_.front();
     pending_operations_.pop_front();
-    base::ThreadTaskRunnerHandle::Get()->PostTask(FROM_HERE,
-                                                  base::Bind(closure));
+    base::MessageLoopProxy::current()->PostTask(FROM_HERE, base::Bind(closure));
   }
 }
 
 }  // namespace content