Eradicate keyIndentifier from devtools/*

third_party/WebKit/Source/devtools/front_end/components_lazy/FilmStripView.js

 // Copyright 2015 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.
 
 /**
  * @constructor
  * @extends {WebInspector.HBox}
  */
 WebInspector.FilmStripView = function()
 {
@@ skipping 246 matching lines @@
             this._dialog.show();
         }
         this._dialog.contentResized();
     },
 
     /**
      * @param {!Event} event
      */
     _keyDown: function(event)
     {
-        switch (event.keyIdentifier) {
-        case "Left":
+        switch (event.key) {
+        case "ArrowLeft":
             if (WebInspector.isMac() && event.metaKey)
                 this._onFirstFrame();
             else
                 this._onPrevFrame();
             break;
 
-        case "Right":
+        case "ArrowRight":
             if (WebInspector.isMac() && event.metaKey)
                 this._onLastFrame();
             else
                 this._onNextFrame();
             break;
 
         case "Home":
             this._onFirstFrame();
             break;
 
@@ skipping 34 matching lines @@
      */
     _render: function()
     {
         var frame = this._frames[this._index];
         this._timeLabel.textContent = Number.millisToString(frame.timestamp - this._zeroTime);
         return frame.imageDataPromise().then(WebInspector.FilmStripView._setImageData.bind(null, this._imageElement)).then(this._resize.bind(this));
     },
 
     __proto__: WebInspector.VBox.prototype
 }