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

chrome/browser/chromeos/extensions/file_manager/private_api_mount.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/extensions/file_manager/private_api_mount.h"
 
 #include <string>
 
 #include "base/files/file_util.h"
 #include "base/format_macros.h"
@@ skipping 127 matching lines @@
       base::Bind(
           &FileManagerPrivateAddMountFunction::RunAfterMarkCacheFileAsMounted,
           this,
           drive_path.BaseName()));
 }
 
 void FileManagerPrivateAddMountFunction::RunAfterMarkCacheFileAsMounted(
     const base::FilePath& display_name,
     drive::FileError error,
     const base::FilePath& file_path) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
 
   if (error != drive::FILE_ERROR_OK) {
     SendResponse(false);
     return;
   }
 
   // Pass back the actual source path of the mount point.
   SetResult(new base::StringValue(file_path.AsUTF8Unsafe()));
   SendResponse(true);
 
@@ skipping 86 matching lines @@
                 name(), request_id(), log_string.c_str(), result.size());
   }
 
   results_ =
       file_manager_private::GetVolumeMetadataList::Results::Create(result);
   SendResponse(true);
   return true;
 }
 
 }  // namespace extensions