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

chrome/browser/thumbnails/thumbnail_tab_helper.cc

Index: chrome/browser/thumbnails/thumbnail_tab_helper.cc
diff --git a/chrome/browser/thumbnails/thumbnail_tab_helper.cc b/chrome/browser/thumbnails/thumbnail_tab_helper.cc
index 0db61992f231624062e8677d54bce4748dbe34bc..f8322e76f9a2d9573939dea942a32fe342b8bffb 100644
--- a/chrome/browser/thumbnails/thumbnail_tab_helper.cc
+++ b/chrome/browser/thumbnails/thumbnail_tab_helper.cc
@@ -71,7 +71,7 @@ void ProcessCapturedBitmap(scoped_refptr<ThumbnailingContext> context,
 
   // On success, we must be on the UI thread (on failure because of shutdown we
   // are not on the UI thread).
-  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
+  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
 
   algorithm->ProcessBitmap(context, base::Bind(&UpdateThumbnail), bitmap);
 }
@@ -79,7 +79,7 @@ void ProcessCapturedBitmap(scoped_refptr<ThumbnailingContext> context,
 void AsyncProcessThumbnail(content::WebContents* web_contents,
                            scoped_refptr<ThumbnailingContext> context,
                            scoped_refptr<ThumbnailingAlgorithm> algorithm) {
-  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
+  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
   RenderWidgetHost* render_widget_host = web_contents->GetRenderViewHost();
   content::RenderWidgetHostView* view = render_widget_host->GetView();
   if (!view)