Bug 717110 - [New Tab Page] Tooltips should be added to page thumbnails; r=dao

browser/base/content/newtab/sites.js

@@ -120,8 +120,10 @@ Site.prototype = {
    * Renders the site's data (fills the HTML fragment).
    */
   _render: function Site_render() {
+    let title = this.title || this.url;
+    this.node.setAttribute("title", title);
     this.node.setAttribute("href", this.url);
-    this._querySelector(".site-title").textContent = this.title || this.url;
+    this._querySelector(".site-title").textContent = title;
 
     if (this.isPinned())
       this._updateAttributes(true);