Updates google-input-tools.

third_party/google_input_tools/src/chrome/os/inputview/handler/util.js

 // Copyright 2014 The ChromeOS IME Authors. All Rights Reserved.
 // limitations under the License.
 // See the License for the specific language governing permissions and
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // distributed under the License is distributed on an "AS-IS" BASIS,
 // Unless required by applicable law or agreed to in writing, software
 //
 //      http://www.apache.org/licenses/LICENSE-2.0
 //
 // You may obtain a copy of the License at
 // you may not use this file except in compliance with the License.
 // Licensed under the Apache License, Version 2.0 (the "License");
 //
 goog.provide('i18n.input.chrome.inputview.handler.Util');
 
 goog.require('goog.dom');
-
+goog.require('goog.events.EventType');
 
 goog.scope(function() {
 var Util = i18n.input.chrome.inputview.handler.Util;
 
 
+/**
+ * The mouse event identifier.
+ *
+ * @type {number}
+ */
+Util.MOUSE_EVENT_IDENTIFIER = -1;
+
+
+/**
+ * Represents invalid event identifier.
+ *
+ * @type {number}
+ */
+Util.INVALID_EVENT_IDENTIFIER = -2;
+
 
 /**
  * Gets the view.
  *
  * @param {Node} target .
  * @return {i18n.input.chrome.inputview.elements.Element} .
  */
 Util.getView = function(target) {
   if (!target) {
     return null;
   }
   var element = /** @type {!Element} */ (target);
   var view = element['view'];
   while (!view && element) {
     view = element['view'];
     element = goog.dom.getParentElement(element);
   }
   return view;
 };
 
+
+/**
+ * Gets the identifier from |e|. If |e| is a MouseEvent, returns -1.
+ *
+ * @param {!Event|!Touch|!goog.events.BrowserEvent} e The event.
+ * @return {number} .
+ *
+ */
+Util.getEventIdentifier = function(e) {
+  var nativeEvt = e.getBrowserEvent ? e.getBrowserEvent() : e;
+  if (nativeEvt.changedTouches) {
+    if (e.type == goog.events.EventType.TOUCHMOVE) {
+      console.error('TouchMove is not expected.');
+    }
+    // TouchStart and TouchEnd should only contains one Touch in changedTouches.
+    // The spec didn't have this restriction but it is safe to assume it in
+    // Chrome.
+    nativeEvt = nativeEvt.changedTouches[0];
+  }
+  return nativeEvt.identifier === undefined ?
+      Util.MOUSE_EVENT_IDENTIFIER : nativeEvt.identifier;
+};
+
+
 });  // goog.scope