md settings: Update lock screen to match new mocks.

chrome/browser/resources/chromeos/quick_unlock/compiled_resources2.gyp

 # Copyright 2016 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.
 {
   'targets': [
     {
       'target_name': 'pin_keyboard',
       'dependencies': [
         '<(DEPTH)/ui/webui/resources/js/compiled_resources2.gyp:i18n_behavior',
         '<(DEPTH)/third_party/polymer/v1_0/components-chromium/paper-button/compiled_resources2.gyp:paper-button-extracted',
+        '<(DEPTH)/third_party/polymer/v1_0/components-chromium/paper-input/compiled_resources2.gyp:paper-input-extracted',
        ],
       'includes': ['../../../../../third_party/closure_compiler/compile_js2.gypi'],
     },
   ],
 }