Use same vk non-overscroll solution for both login and lock screens

chrome/browser/resources/login/display_manager.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.
 
 /**
  * @fileoverview Display manager for WebUI OOBE and login.
  */
 
 // TODO(xiyuan): Find a better to share those constants.
 /** @const */ var SCREEN_OOBE_NETWORK = 'connect';
@@ skipping 248 matching lines @@
     },
 
     /**
      * Sets the current size of the virtual keyboard.
      * @param {number} width keyboard width
      * @param {number} height keyboard height
      */
     setVirtualKeyboardSize: function(width, height) {
       this.virtualKeyboardWidth_ = width;
       this.virtualKeyboardHeight_ = height;
-
-      // Special case for screen lock. http://crbug.com/377904
-      // In case of virtual keyboard adjuct work area.
-      if (this.displayType == DISPLAY_TYPE.LOCK) {
-        var bottom = (height) ? height : $('login-header-bar').offsetHeight;
-        var clientArea = $('outer-container');
-        clientArea.style.bottom = cr.ui.toCssPx(bottom);
-      }
     },
 
     /**
      * Sets the current size of the client area (display size).
      * @param {number} width client area width
      * @param {number} height client area height
      */
     setClientAreaSize: function(width, height) {
       var clientArea = $('outer-container');
       var bottom = parseInt(window.getComputedStyle(clientArea).bottom);
@@ skipping 741 matching lines @@
    */
   DisplayManager.refocusCurrentPod = function() {
     $('pod-row').refocusCurrentPod();
   };
 
   // Export
   return {
     DisplayManager: DisplayManager
   };
 });