Remove dead code for system VK.

ui/keyboard/resources/api_adapter.js

-// Copyright 2013 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.
-
-/**
- * Queries the document for an element with a matching id.
- * @param {string} id is a case-sensitive string representing the unique ID of
- *     the element being sought.
- * @return {?Element} The element with that id.
- */
-var $ = function(id) {
-  return document.getElementById(id);
-}
-
-function logIfError() {
-  if (chrome.runtime.lastError) {
-    console.log(chrome.runtime.lastError);
-  }
-}
-
-function insertText(text) {
-  chrome.virtualKeyboardPrivate.insertText(text, logIfError);
-}
-
-function MoveCursor(swipe_direction, swipe_flags) {
-  chrome.virtualKeyboardPrivate.moveCursor(swipe_direction, swipe_flags);
-}
-
-function sendKeyEvent(event) {
-  chrome.virtualKeyboardPrivate.sendKeyEvent(event, logIfError);
-}
-
-(function(scope) {
-  var keyboardLocked_ = false;
-
-  /**
-   * Check the lock state of virtual keyboard.
-   * @return {boolean} True if virtual keyboard is locked.
-   */
-  function keyboardLocked() {
-    return keyboardLocked_;
-  }
-
-  /**
-   * Lock or unlock virtual keyboard.
-   * @param {boolean} lock Whether or not to lock the virtual keyboard.
-   */
-  function lockKeyboard(lock) {
-    keyboardLocked_ = lock;
-    chrome.virtualKeyboardPrivate.lockKeyboard(lock);
-  }
-
-  scope.keyboardLocked = keyboardLocked;
-  scope.lockKeyboard = lockKeyboard;
-})(this);
-
-function hideKeyboard() {
-  lockKeyboard(false);
-  chrome.virtualKeyboardPrivate.hideKeyboard(logIfError);
-}
-
-function keyboardLoaded() {
-  chrome.virtualKeyboardPrivate.keyboardLoaded(logIfError);
-}
-
-function getKeyboardConfig(callback) {
-  chrome.virtualKeyboardPrivate.getKeyboardConfig(function (config) {
-    callback(config);
-  });
-}
-
-chrome.virtualKeyboardPrivate.onTextInputBoxFocused.addListener(
-  function (inputContext) {
-    $('keyboard').inputTypeValue = inputContext.type;
-  }
-);