Refactor TokenValidatorImpl into a base class + implementation.

remoting/remoting_host.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.
 
 {
   'includes': [
     'remoting_host_linux.gypi',
     'remoting_host_mac.gypi',
     'remoting_host_win.gypi',
   ],
@@ skipping 200 matching lines @@
             'host/server_log_entry.cc',
             'host/server_log_entry.h',
             'host/service_urls.cc',
             'host/service_urls.h',
             'host/session_manager_factory.cc',
             'host/session_manager_factory.h',
             'host/shaped_screen_capturer.cc',
             'host/shaped_screen_capturer.h',
             'host/signaling_connector.cc',
             'host/signaling_connector.h',
+            'host/token_validator_base.cc',
+            'host/token_validator_base.h',
             'host/token_validator_factory_impl.cc',
             'host/token_validator_factory_impl.h',
             'host/usage_stats_consent.h',
             'host/usage_stats_consent_mac.cc',
             'host/usage_stats_consent_win.cc',
             'host/username.cc',
             'host/username.h',
             'host/video_scheduler.cc',
             'host/video_scheduler.h',
             'host/win/com_security.cc',
@@ skipping 578 matching lines @@
                 '../base/allocator/allocator.gyp:allocator',
               ],
             }],  # OS=linux
           ],  # end of 'conditions'
         },  # end of target 'remoting_me2me_host'
       ],  # end of 'targets'
     }],  # OS!="win"
 
   ],  # end of 'conditions'
 }