Redoing Issue 36073011: Allowing file:/// in Instant Extended's Most Visited links.

chrome/browser/resources/local_ntp/window_disposition_util.js

+// Copyright 2014 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 Utilities for handling window disposition.
+ */
+
+
+/**
+ * The JavaScript button event value for a middle click.
+ * @type {number}
+ * @const
+ */
+var MIDDLE_MOUSE_BUTTON = 1;
+
+
+/**
+ * Gets the desired navigation behavior from a event. This function works both
+ * with mouse and keyboard events.
+ * @param {Event} e The event object.
+ * @return {WindowOpenDisposition} The desired navigation behavior.
+ */
+function getDispositionFromEvent(e) {
+  var middleButton = e.button == MIDDLE_MOUSE_BUTTON;
+  return chrome.embeddedSearch.newTabPage.getDispositionFromClick(middleButton,
+                                                                  e.altKey,
+                                                                  e.ctrlKey,
+                                                                  e.metaKey,
+                                                                  e.shiftKey);
+}