[chrome/browser/sync && sync_file_system] favor DCHECK_CURRENTLY_ON for better logs

chrome/browser/sync/glue/history_model_worker.cc

 // Copyright (c) 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 "chrome/browser/sync/glue/history_model_worker.h"
 
 #include "base/memory/ref_counted.h"
 #include "base/message_loop/message_loop.h"
 #include "base/synchronization/waitable_event.h"
 #include "content/public/browser/browser_thread.h"
@@ skipping 52 matching lines @@
 namespace {
 
 // Post the work task on |history_service|'s DB thread from the UI
 // thread.
 void PostWorkerTask(
     const base::WeakPtr<history::HistoryService>& history_service,
     const syncer::WorkCallback& work,
     base::CancelableTaskTracker* cancelable_tracker,
     WaitableEvent* done,
     syncer::SyncerError* error) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
   if (history_service.get()) {
     scoped_ptr<history::HistoryDBTask> task(new WorkerTask(work, done, error));
     history_service->ScheduleDBTask(task.Pass(), cancelable_tracker);
   } else {
     *error = syncer::CANNOT_DO_WORK;
     done->Signal();
   }
 }
 
 }  // namespace
@@ skipping 42 matching lines @@
 }
 
 HistoryModelWorker::~HistoryModelWorker() {
   // The base::CancelableTaskTracker class is not thread-safe and must only be
   // used from a single thread but the current object may not be destroyed from
   // the UI thread, so delete it from the UI thread.
   BrowserThread::DeleteOnUIThread::Destruct(cancelable_tracker_.release());
 }
 
 }  // namespace browser_sync