Remove use of deprecated MessageLoop methods in sync.

sync/internal_api/attachments/attachment_service_proxy_unittest.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 "sync/internal_api/public/attachments/attachment_service_proxy.h"
 
 #include <memory>
 
 #include "base/bind.h"
+#include "base/location.h"
 #include "base/memory/ref_counted_memory.h"
 #include "base/run_loop.h"
+#include "base/single_thread_task_runner.h"
 #include "base/synchronization/lock.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/threading/non_thread_safe.h"
 #include "base/threading/thread.h"
+#include "base/threading/thread_task_runner_handle.h"
 #include "sync/api/attachments/attachment.h"
 #include "sync/internal_api/public/attachments/attachment_service.h"
 #include "sync/internal_api/public/base/model_type.h"
 #include "sync/protocol/sync.pb.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace syncer {
 
 // A stub implementation of AttachmentService that counts the number of times
 // its methods are invoked.
 class StubAttachmentService : public AttachmentService,
                               public base::NonThreadSafe {
  public:
   StubAttachmentService() : call_count_(0), weak_ptr_factory_(this) {
     // DetachFromThread because we will be constructed in one thread and
     // used/destroyed in another.
     DetachFromThread();
   }
 
   ~StubAttachmentService() override {}
 
   void GetOrDownloadAttachments(
       const AttachmentIdList& attachment_ids,
       const GetOrDownloadCallback& callback) override {
     CalledOnValidThread();
     Increment();
     std::unique_ptr<AttachmentMap> attachments(new AttachmentMap());
-    base::MessageLoop::current()->PostTask(
+    base::ThreadTaskRunnerHandle::Get()->PostTask(
         FROM_HERE,
-        base::Bind(callback,
-                   AttachmentService::GET_UNSPECIFIED_ERROR,
+        base::Bind(callback, AttachmentService::GET_UNSPECIFIED_ERROR,
                    base::Passed(&attachments)));
   }
 
   void UploadAttachments(const AttachmentIdList& attachments_ids) override {
     CalledOnValidThread();
     Increment();
   }
 
   virtual base::WeakPtr<AttachmentService> AsWeakPtr() {
     return weak_ptr_factory_.GetWeakPtr();
@@ skipping 114 matching lines @@
   // Now that the wrapped object has been destroyed, call again and see that we
   // don't crash and the count remains the same.
   proxy->GetOrDownloadAttachments(AttachmentIdList(), callback_get_or_download);
   WaitForStubThread();
   WaitForStubThread();
   base::RunLoop().RunUntilIdle();
   EXPECT_EQ(1, count_callback_get_or_download);
 }
 
 }  // namespace syncer