Delete app_host from apps/

chrome/chrome.gyp

 # 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.
 {
   'variables': {
     'chromium_code': 1,
 
     # Define the common dependencies that contain all the actual
     # Chromium functionality.  This list gets pulled in below by
     # the link of the actual chrome (or chromium) executable on
@@ skipping 860 matching lines @@
           'variables': {
             'output_dir': 'chrome_version',
             'template_input_path': 'app/chrome_version.rc.version',
           },
           'direct_dependent_settings': {
             'include_dirs': [
               '<(SHARED_INTERMEDIATE_DIR)/<(output_dir)',
             ],
           },
           'sources': [
-            'app/app_host_exe.ver',
             'app/chrome_exe.ver',
             'app/chrome_dll.ver',
             'app/nacl64_exe.ver',
             'app/other.ver',
           ],
           'includes': [
             'version_resource_rules.gypi',
           ],
         },
         {
@@ skipping 307 matching lines @@
               'sources': [
                 'service/cloud_print/print_system_cups.cc',
               ],
             }],
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }