Fixing iframe jank in the local omnibox popup.

chrome/browser/resources/omnibox_result.js

+// Copyright 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+/**
+ * @fileoverview Click handler for omnibox results.
+ */
+
+/**
+ * The origin of the embedding page.
+ * This string literal must be in double quotes for proper escaping.
+ * @type {string}
+ * @const
+ */
+var EMBEDDER_ORIGIN = "%s";
+
+function handleClick(event) {
+  top.postMessage({'click': event.button}, EMBEDDER_ORIGIN);
+}
+
+window.addEventListener('click', handleClick, false);