PDF: Use KeyboardEvent.code instead of keyCode.

chrome/browser/resources/pdf/pdf_scripting_api.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.
 
 /**
  * Turn a dictionary received from postMessage into a key event.
  * @param {Object} dict A dictionary representing the key event.
  * @return {Event} A key event.
  */
 function DeserializeKeyEvent(dict) {
   var e = document.createEvent('Event');
   e.initEvent('keydown');
+  // TODO(thestig): Remove this once setKeyEventCallback() callers have been
+  // converted to event.code. Ditto below in SerializeKeyEvent().
   e.keyCode = dict.keyCode;
+  e.code = dict.code;
   e.shiftKey = dict.shiftKey;
   e.ctrlKey = dict.ctrlKey;
   e.altKey = dict.altKey;
   e.metaKey = dict.metaKey;
   e.fromScriptingAPI = true;
   return e;
 }
 
 /**
  * Turn a key event into a dictionary which can be sent over postMessage.
  * @param {Event} event A key event.
  * @return {Object} A dictionary representing the key event.
  */
 function SerializeKeyEvent(event) {
   return {
     keyCode: event.keyCode,
+    code: event.code,
     shiftKey: event.shiftKey,
     ctrlKey: event.ctrlKey,
     altKey: event.altKey,
     metaKey: event.metaKey
   };
 }
 
 /**
  * An enum containing a value specifying whether the PDF is currently loading,
  * has finished loading or failed to load.
@@ skipping 213 matching lines @@
   // Add the functions to the iframe so that they can be called directly.
   iframe.setViewportChangedCallback =
       client.setViewportChangedCallback.bind(client);
   iframe.setLoadCallback = client.setLoadCallback.bind(client);
   iframe.setKeyEventCallback = client.setKeyEventCallback.bind(client);
   iframe.resetPrintPreviewMode = client.resetPrintPreviewMode.bind(client);
   iframe.loadPreviewPage = client.loadPreviewPage.bind(client);
   iframe.sendKeyEvent = client.sendKeyEvent.bind(client);
   return iframe;
 }