Add the plumbing that will carry a clipboard item from a chromoting client to a host.

remoting/remoting.gyp

 # 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.
 
 {
   'variables': {
     # TODO(dmaclach): can we pick this up some other way? Right now it's
     # duplicated from chrome.gyp
     'chromium_code': 1,
     # Use consistent strings across all platforms. Note that the plugin name
@@ skipping 816 matching lines @@
         'protocol/buffered_socket_writer.cc',
         'protocol/buffered_socket_writer.h',
         'protocol/channel_authenticator.h',
         'protocol/channel_dispatcher_base.cc',
         'protocol/channel_dispatcher_base.h',
         'protocol/client_control_dispatcher.cc',
         'protocol/client_control_dispatcher.h',
         'protocol/client_event_dispatcher.cc',
         'protocol/client_event_dispatcher.h',
         'protocol/client_stub.h',
+        'protocol/clipboard_stub.h',
         'protocol/connection_to_client.cc',
         'protocol/connection_to_client.h',
         'protocol/connection_to_host.cc',
         'protocol/connection_to_host.h',
         'protocol/content_description.cc',
         'protocol/content_description.h',
         'protocol/errors.h',
         'protocol/host_control_dispatcher.cc',
         'protocol/host_control_dispatcher.h',
         'protocol/host_event_dispatcher.cc',
@@ skipping 213 matching lines @@
                   '../base/allocator/allocator.gyp:allocator',
                 ],
               },
             ],
           ],
         }],
       ],  # end of 'conditions'
     },  # end of target 'remoting_unittests'
   ],  # end of targets
 }