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

content/browser/appcache/appcache_service_impl.cc

 // Copyright 2014 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/appcache/appcache_service_impl.h"
 
 #include <functional>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
-#include "base/location.h"
 #include "base/logging.h"
+#include "base/message_loop/message_loop.h"
 #include "base/single_thread_task_runner.h"
 #include "base/stl_util.h"
-#include "base/thread_task_runner_handle.h"
 #include "content/browser/appcache/appcache.h"
 #include "content/browser/appcache/appcache_backend_impl.h"
 #include "content/browser/appcache/appcache_entry.h"
 #include "content/browser/appcache/appcache_executable_handler.h"
 #include "content/browser/appcache/appcache_histograms.h"
 #include "content/browser/appcache/appcache_policy.h"
 #include "content/browser/appcache/appcache_quota_client.h"
 #include "content/browser/appcache/appcache_response.h"
 #include "content/browser/appcache/appcache_service_impl.h"
 #include "content/browser/appcache/appcache_storage_impl.h"
@@ skipping 31 matching lines @@
       service_->pending_helpers_.erase(this);
   }
 
   virtual void Start() = 0;
   virtual void Cancel();
 
  protected:
   void CallCallback(int rv) {
     if (!callback_.is_null()) {
       // Defer to guarantee async completion.
-      base::ThreadTaskRunnerHandle::Get()->PostTask(
+      base::MessageLoop::current()->PostTask(
           FROM_HERE, base::Bind(&DeferredCallback, callback_, rv));
     }
     callback_.Reset();
   }
 
   AppCacheServiceImpl* service_;
   net::CompletionCallback callback_;
 };
 
 void AppCacheServiceImpl::AsyncHelper::Cancel() {
@@ skipping 494 matching lines @@
   backends_.insert(
       BackendMap::value_type(backend_impl->process_id(), backend_impl));
 }
 
 void AppCacheServiceImpl::UnregisterBackend(
     AppCacheBackendImpl* backend_impl) {
   backends_.erase(backend_impl->process_id());
 }
 
 }  // namespace content