Revert of Implement IPC::ParamTraits<mojo::MessagePipeHandle>

ipc/mojo/ipc_mojo.gyp

 # 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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'includes': [
   ],
@@ skipping 22 matching lines @@
         'ipc_channel_mojo.cc',
         'ipc_channel_mojo.h',
         'ipc_channel_mojo_host.cc',
         'ipc_channel_mojo_host.h',
         'ipc_mojo_bootstrap.cc',
         'ipc_mojo_bootstrap.h',
         'ipc_mojo_handle_attachment.cc',
         'ipc_mojo_handle_attachment.h',
         'ipc_mojo_message_helper.cc',
         'ipc_mojo_message_helper.h',
-        'ipc_mojo_param_traits.cc',
-        'ipc_mojo_param_traits.h',
         'ipc_message_pipe_reader.cc',
         'ipc_message_pipe_reader.h',
         'scoped_ipc_support.cc',
         'scoped_ipc_support.h',
       ],
       # TODO(gregoryd): direct_dependent_settings should be shared with the
       # 64-bit target, but it doesn't work due to a bug in gyp
       'direct_dependent_settings': {
         'include_dirs': [
           '..',
@@ skipping 47 matching lines @@
         '..'
       ],
       'sources': [
         'ipc_mojo_perftest.cc',
       ],
       'conditions': [
       ],
     },
   ],
 }