Make application shortcuts point to app_host.exe, install App Host during app installation.

chrome/chrome_browser.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.
 
 {
   'targets': [
     {
       'target_name': 'browser',
       'type': 'static_library',
@@ skipping 2628 matching lines @@
             # Exclude all of rlz.
             ['exclude', '^browser/rlz/'],
           ],
         }],
         ['OS=="win"', {
           'include_dirs': [
             '<(DEPTH)/third_party/wtl/include',
           ],
           'dependencies': [
             'installer_util_strings',
+            'launcher_support',
             '../google_update/google_update.gyp:google_update',
             '../third_party/iaccessible2/iaccessible2.gyp:iaccessible2',
             '../third_party/isimpledom/isimpledom.gyp:isimpledom',
             '../ui/app_list/app_list.gyp:app_list',
             '../ui/views/controls/webview/webview.gyp:webview',
             '../ui/views/views.gyp:views',
           ],
           'export_dependent_settings': [
             '../ui/views/controls/webview/webview.gyp:webview',
             '../ui/views/views.gyp:views',
@@ skipping 271 matching lines @@
             'proto_in_dir': '../third_party/cros_system_api/dbus',
             'proto_out_dir': 'chrome/browser/media_transfer_protocol',
           },
           'includes': ['../build/protoc.gypi'],
         },
       ],
      },
     ],
   ],
 }