[chrome/browser/android] favor DCHECK_CURRENTLY_ON for better logs

chrome/browser/android/download/chrome_download_manager_overwrite_infobar_delegate.cc

 // Copyright 2015 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/android/download/chrome_download_manager_overwrite_infobar_delegate.h"
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
 #include "base/files/file_util.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 55 matching lines @@
   return suggested_download_path_.DirName().value();
 }
 
 void ChromeDownloadManagerOverwriteInfoBarDelegate::InfoBarDismissed() {
   file_selected_callback_.Run(base::FilePath());
 }
 
 void ChromeDownloadManagerOverwriteInfoBarDelegate::CreateNewFileInternal(
     const base::FilePath& suggested_download_path,
     const DownloadTargetDeterminerDelegate::FileSelectedCallback& callback) {
-  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::FILE));
+  DCHECK_CURRENTLY_ON(content::BrowserThread::FILE);
   int uniquifier = base::GetUniquePathNumber(suggested_download_path,
                                              base::FilePath::StringType());
   base::FilePath new_path = suggested_download_path;
   if (uniquifier > 0) {
     new_path = suggested_download_path.InsertBeforeExtensionASCII(
         base::StringPrintf(" (%d)", uniquifier));
   }
   content::BrowserThread::PostTask(content::BrowserThread::UI, FROM_HERE,
                                    base::Bind(callback, new_path));
 }
 
 }  // namespace android
 }  // namespace chrome