scoped_ptr<PrintingUIWebContentsObserver> web_contents_observer,
int document_page_count,
bool has_selection) {
- DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+ DCHECK_CURRENTLY_ON(BrowserThread::UI);
gfx::NativeView parent_view = web_contents_observer->GetParentView();
if (!parent_view) {