Implement HasPermission() method in PermissionService.

content/content_app.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.
 
 {
   'include_dirs': [
     '..',
   ],
   'dependencies': [
     '../base/base.gyp:base',
     '../base/base.gyp:base_i18n',
     '../crypto/crypto.gyp:crypto',
+    '../mojo/edk/mojo_edk.gyp:mojo_system_impl',
+    '../mojo/mojo_base.gyp:mojo_environment_chromium',
     '../ui/base/ui_base.gyp:ui_base',
     '../ui/gfx/gfx.gyp:gfx',
     '../ui/gfx/gfx.gyp:gfx_geometry',
   ],
   'sources': [
     'app/android/app_jni_registrar.cc',
     'app/android/app_jni_registrar.h',
     'app/android/child_process_service.cc',
     'app/android/child_process_service.h',
     'app/android/content_main.cc',
@@ skipping 32 matching lines @@
       'dependencies': [
         'content_startup_helper_win',
       ],
     }],
     ['OS=="ios"', {
       'sources!': [
         'app/content_main.cc',
         'app/mojo/mojo_init.cc',
         'app/mojo/mojo_init.h',
       ],
-    }, {  # OS!="ios"
-      'dependencies': [
-        '../mojo/edk/mojo_edk.gyp:mojo_system_impl',
-        '../mojo/mojo_base.gyp:mojo_environment_chromium',
-     ],
     }],
   ],
 }