Bug 717492 - [New Tab Page] URL bar history pops up when pressing toolbar buttons; r=dao

browser/base/content/newtab/toolbar.js

@@ -24,6 +24,16 @@ let gToolbar = {
       let handler = function () self[aType]();
 
       button.addEventListener("click", handler, false);
+
+#ifdef XP_MACOSX
+      // Per default buttons lose focus after being clicked on Mac OS X.
+      // So when the URL bar has focus and a toolbar button is clicked the
+      // URL bar regains focus and the history pops up. We need to prevent
+      // that by explicitly removing its focus.
+      button.addEventListener("mousedown", function () {
+        window.focus();
+      }, false);
+#endif
     }, this);
   },