Componentize more signin code

components/signin.gypi

 # Copyright 2014 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/signin/core/common
       'target_name': 'signin_core_common',
       'type': 'static_library',
@@ skipping 98 matching lines @@
         'signin_core_browser',
         '../testing/gtest.gyp:gtest',
       ],
       'include_dirs': [
         '..',
       ],
       'sources': [
         # Note: file list duplicated in GN build.
         'signin/core/browser/fake_auth_status_provider.cc',
         'signin/core/browser/fake_auth_status_provider.h',
+        'signin/core/browser/fake_profile_oauth2_token_service.cc',
+        'signin/core/browser/fake_profile_oauth2_token_service.h',
         'signin/core/browser/test_signin_client.cc',
         'signin/core/browser/test_signin_client.h',
       ],
     },
   ],
   'conditions': [
     ['OS == "ios"', {
       # GN version: //components/signin/core/browser:ios
       'targets': [
         {
@@ skipping 32 matching lines @@
             'signin/ios/browser/fake_profile_oauth2_token_service_ios_delegate.h',
             'signin/ios/browser/fake_profile_oauth2_token_service_ios_delegate.mm',
             'signin/ios/browser/fake_profile_oauth2_token_service_ios_provider.h',
             'signin/ios/browser/fake_profile_oauth2_token_service_ios_provider.mm',
           ],
         },
       ],
     }],
   ],
 }