Move shell integration code from chrome/browser to apps

apps/apps.gypi

 # Copyright (c) 2013 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': 'apps',
       'type': 'static_library',
       'variables': { 'enable_wexit_time_destructors': 1, },
@@ skipping 14 matching lines @@
         'app_launcher.cc',
         'app_launcher.h',
         'app_restore_service.cc',
         'app_restore_service.h',
         'app_restore_service_factory.cc',
         'app_restore_service_factory.h',
         'pref_names.cc',
         'pref_names.h',
         'prefs.cc',
         'prefs.h',
+        'shell_integration.cc',
+        'shell_integration.h',
+        'shell_integration_android.cc',
+        'shell_integration_linux.cc',
+        'shell_integration_linux.h',
+        'shell_integration_mac.mm',
+        'shell_integration_win.cc',
       ],
       'conditions': [
         ['enable_extensions==0', {
           'sources/': [
             ['exclude', '^apps/'],
           ],
         }],
       ],
       # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
       'msvs_disabled_warnings': [ 4267, ],
@@ skipping 32 matching lines @@
           'msvs_settings': {
             'VCLinkerTool': {
               'SubSystem': '2',  # Set /SUBSYSTEM:WINDOWS
             },
           },
         },
       ],
     },],  # 'OS=="win"'
   ],  # 'conditions'
 }