Example of how to interpose yourself in a message stream.

content/content_common.gypi

 # Copyright (c) 2011 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': [
     {
       'target_name': 'content_common',
       'type': '<(library)',
       'dependencies': [
@@ skipping 175 matching lines @@
         'common/sandbox_init_wrapper_linux.cc',
         'common/sandbox_init_wrapper_mac.cc',
         'common/sandbox_init_wrapper_win.cc',
         'common/sandbox_mac.h',
         'common/sandbox_mac.mm',
         'common/sandbox_methods_linux.h',
         'common/section_util_win.cc',
         'common/section_util_win.h',
         'common/serialized_script_value.cc',
         'common/serialized_script_value.h',
+        'common/set_ipc_fuzzing.cc',
+        'common/set_ipc_fuzzing.h',
         'common/set_process_title.cc',
         'common/set_process_title.h',
         'common/set_process_title_linux.cc',
         'common/set_process_title_linux.h',
         'common/socket_stream.h',
         'common/socket_stream_dispatcher.cc',
         'common/socket_stream_dispatcher.h',
         'common/socket_stream_messages.h',
         'common/speech_input_messages.h',
         'common/speech_input_result.h',
@@ skipping 62 matching lines @@
         }],
         ['enable_gpu==1', {
           'dependencies': [
             '../gpu/gpu.gyp:command_buffer_service',
           ],
         }],
       ],
     },
   ],
 }