Abstract chrome::GetChannel() through VariationsServiceClient

components/variations.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': [
     {
       # GN version: //components/variations
       'target_name': 'variations',
       'type': 'static_library',
@@ skipping 78 matching lines @@
       # GN version: //components/variations/service
       'target_name': 'variations_service',
 
       # TODO(blundell): Change to static_library once it has code in it.
       'type': 'none',
       'include_dirs': [
         '..',
       ],
       'dependencies': [
         '../base/base.gyp:base',
+        'version_info',
       ],
       'sources': [
         'variations/service/variations_service_client.h',
       ],
     },
     {
       # GN version: //components/variations/net:net
       'target_name': 'variations_http_provider',
       'type': 'static_library',
       'include_dirs': [
@@ skipping 40 matching lines @@
           ],
           'variables': {
             'jni_gen_package': 'variations',
           },
           'includes': [ '../build/jni_generator.gypi' ],
         },
       ],
     }],
   ]
 }