Catch exception when register extension with inputUI.

chrome/browser/resources/keyboard/main.js

 // Copyright (c) 2011 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 A simple, English virtual keyboard implementation.
  */
 
 var KEY_MODE = 'key';
 var SHIFT_MODE = 'shift';
@@ skipping 560 matching lines @@
  * @type {Array.<Row>}
  */
 var allRows = [];  // Populated during start()
 
 /**
  * Calculate the height of the row based on the size of the page.
  * @return {number} The height of each row, in pixels.
  */
 function getRowHeight() {
   var x = window.innerWidth;
-  var y = window.innerHeight - IME_HEIGHT - 2;
+  var y = window.innerHeight - (imeEnabled ? IME_HEIGHT - 2 : 0);
   return (x > kKeyboardAspect * y) ?
       (height = Math.floor(y / 4)) :
       (height = Math.floor(x / (kKeyboardAspect * 4)));
 }
 
 /**
  * Set the keyboard mode.
  * @param {string} mode The new mode.
  * @return {void}
  */
@@ skipping 90 matching lines @@
 
   for (var i = 0; i < allRows.length; ++i) {
     body.appendChild(allRows[i].makeDOM(getRowHeight()));
     allRows[i].showMode(KEY_MODE);
   }
 
   window.onresize();
 }
 // TODO(bryeung): would be nice to leave less gutter (without causing
 // rendering issues with floated divs wrapping at some sizes).