[chrome/browser/t*] favor DCHECK_CURRENTLY_ON for better logs

chrome/browser/thumbnails/thumbnail_service_impl.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/thumbnails/thumbnail_service_impl.h"
 
 #include "base/command_line.h"
 #include "base/memory/ref_counted_memory.h"
 #include "base/time/time.h"
 #include "chrome/browser/history/history_utils.h"
@@ skipping 18 matching lines @@
 bool IsThumbnailRetargetingEnabled() {
   if (!chrome::IsInstantExtendedAPIEnabled())
     return false;
 
   return base::CommandLine::ForCurrentProcess()->HasSwitch(
       switches::kEnableThumbnailRetargeting);
 }
 
 void AddForcedURLOnUIThread(scoped_refptr<history::TopSites> top_sites,
                             const GURL& url) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
 
   if (top_sites)
     top_sites->AddForcedURL(url, base::Time::Now());
 }
 
 }  // namespace
 
 namespace thumbnails {
 
 ThumbnailServiceImpl::ThumbnailServiceImpl(Profile* profile)
@@ skipping 70 matching lines @@
 }
 
 void ThumbnailServiceImpl::ShutdownOnUIThread() {
   // Since each call uses its own scoped_refptr, we can just clear the reference
   // here by assigning null. If another call is completed, it added its own
   // reference.
   top_sites_ = NULL;
 }
 
 }  // namespace thumbnails