Make favicons for about:history and about:bookmarks switch from lodpi to hidpi when dragging browser

chrome/browser/resources/ntp_search/thumbnail_page.js

Index: chrome/browser/resources/ntp_search/thumbnail_page.js
diff --git a/chrome/browser/resources/ntp_search/thumbnail_page.js b/chrome/browser/resources/ntp_search/thumbnail_page.js
index c4ff74554d409356e3730029b6ed9cb926b79496..9b85cff51200ddce9397f335453c39568b5c5c3b 100644
--- a/chrome/browser/resources/ntp_search/thumbnail_page.js
+++ b/chrome/browser/resources/ntp_search/thumbnail_page.js
@@ -91,7 +91,7 @@ cr.define('ntp', function() {
       var favicon = this.querySelector('.thumbnail-favicon') ||
                     this.ownerDocument.createElement('div');
       favicon.className = 'thumbnail-favicon';
-      favicon.style.backgroundImage = url(getFaviconUrl(dataUrl));
+      favicon.style.backgroundImage = getFaviconImageSet(dataUrl);
       this.appendChild(favicon);
 
       var self = this;