favor DCHECK_CURRENTLY_ON for better logs in chrome/browser/chromeos/

chrome/browser/chromeos/drive/write_on_cache_file.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 "chrome/browser/chromeos/drive/write_on_cache_file.h"
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/threading/sequenced_worker_pool.h"
 #include "chrome/browser/chromeos/drive/file_system_interface.h"
@@ skipping 18 matching lines @@
 
 // Runs |file_io_task_callback| in blocking pool and runs |close_callback|
 // in the UI thread after that.
 void WriteOnCacheFileAfterOpenFile(
     const base::FilePath& drive_path,
     const WriteOnCacheFileCallback& file_io_task_callback,
     const FileOperationCallback& reply,
     FileError error,
     const base::FilePath& local_cache_path,
     const base::Closure& close_callback) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
 
   BrowserThread::GetBlockingPool()->PostTaskAndReply(
       FROM_HERE,
       base::Bind(file_io_task_callback, error, local_cache_path),
       base::Bind(&RunCloseCallbackAndReplyTask, close_callback, reply, error));
 }
 
 }  // namespace
 
 void WriteOnCacheFile(FileSystemInterface* file_system,
                       const base::FilePath& path,
                       const std::string& mime_type,
                       const WriteOnCacheFileCallback& callback) {
   WriteOnCacheFileAndReply(file_system, path, mime_type, callback,
                            base::Bind(&util::EmptyFileOperationCallback));
 }
 
 void WriteOnCacheFileAndReply(FileSystemInterface* file_system,
                               const base::FilePath& path,
                               const std::string& mime_type,
                               const WriteOnCacheFileCallback& callback,
                               const FileOperationCallback& reply) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
   DCHECK(file_system);
   DCHECK(!callback.is_null());
   DCHECK(!reply.is_null());
 
   file_system->OpenFile(
       path,
       OPEN_OR_CREATE_FILE,
       mime_type,
       base::Bind(&WriteOnCacheFileAfterOpenFile, path, callback, reply));
 }
 
 }  // namespace drive