Gesture Recognizer: Make short long press time configurable.

chrome/browser/resources/gesture_config.js

 // Copyright (c) 2012 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.
 
 // Redefine '$' here rather than including 'cr.js', since this is
 // the only function needed.  This allows this file to be loaded
 // in a browser directly for layout and some testing purposes.
 var $ = function(id) { return document.getElementById(id); };
 
 /**
  * WebUI for configuring gesture.* preference values used by
  * Chrome's gesture recognition system.
  */
 var gesture_config = (function() {
   'use strict';
 
   /** Common prefix of gesture preferences. **/
   /** @const */ var GESTURE_PREFIX = 'gesture.';
 
   /** List of fields used to dynamically build form. **/
   var FIELDS = [
     {
       key: 'long_press_time_in_seconds',
       label: 'Long Press Time',
       units: 'seconds',
       default: 1.0
     },
     {
+      key: 'semi_long_press_time_in_seconds',
+      label: 'Semi Long Press Time',
+      units: 'seconds',
+      default: 0.5
+    },
+    {
       key: 'max_seconds_between_double_click',
       label: 'Maximum Double Click Interval',
       units: 'seconds',
       step: 0.1,
       default: 0.7
     },
     {
       key: 'max_separation_for_gesture_touches_in_pixels',
       label: 'Maximum Separation for Gesture Touches',
       units: 'pixels',
@@ skipping 184 matching lines @@
     $('reset-button').onclick = onReset.bind(this);
   }
 
   return {
     initialize: initialize,
     getPreferenceValueResult: getPreferenceValueResult
   };
 })();
 
 document.addEventListener('DOMContentLoaded', gesture_config.initialize);