Add a virtual keyboard webui at chrome://keyboard/

chrome/chrome_repack_resources.gypi

 # Copyright (c) 2012 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.
 {
   'action_name': 'repack_resources',
   'variables': {
     'pak_inputs': [
       '<(grit_out_dir)/memory_internals_resources.pak',
       '<(grit_out_dir)/net_internals_resources.pak',
       '<(grit_out_dir)/signin_internals_resources.pak',
       '<(grit_out_dir)/sync_internals_resources.pak',
       '<(SHARED_INTERMEDIATE_DIR)/ui/ui_resources/webui_resources.pak',
     ],
     'conditions': [
       ['OS != "ios" and OS != "android"', {
         # New paks should be added here by default.
         'pak_inputs': [
           '<(SHARED_INTERMEDIATE_DIR)/webkit/devtools_resources.pak',
           '<(grit_out_dir)/component_extension_resources.pak',
           '<(grit_out_dir)/options_resources.pak',
           '<(grit_out_dir)/quota_internals_resources.pak',
         ],
       }],
       ['OS != "ios"', {
         'pak_inputs': [
           '<(grit_out_dir)/devtools_discovery_page_resources.pak',
         ],
       }],
+      ['use_aura==1', {
+        'pak_inputs': [
+          '<(SHARED_INTERMEDIATE_DIR)/ui/keyboard/keyboard_resources.pak',
+        ],
+      }],
     ],
   },
   'inputs': [
     '<(repack_path)',
     '<@(pak_inputs)',
   ],
   'outputs': [
     '<(SHARED_INTERMEDIATE_DIR)/repack/resources.pak',
   ],
   'action': ['python', '<(repack_path)', '<@(_outputs)', '<@(pak_inputs)'],
 }