content: Pass IOSurface references using Mach IPC.

content/content_child.gypi

 # Copyright 2013 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.
 
 {
   'dependencies': [
     '../base/base.gyp:base',
     '../components/mime_util/mime_util.gyp:mime_util',
     '../components/tracing.gyp:tracing',
     '../components/webcrypto/webcrypto.gyp:webcrypto',
@@ skipping 46 matching lines @@
       'child/bluetooth/web_bluetooth_impl.cc',
       'child/bluetooth/web_bluetooth_impl.h',
       'child/browser_font_resource_trusted.cc',
       'child/browser_font_resource_trusted.h',
       'child/child_discardable_shared_memory_manager.cc',
       'child/child_discardable_shared_memory_manager.h',
       'child/child_gpu_memory_buffer_manager.cc',
       'child/child_gpu_memory_buffer_manager.h',
       'child/child_histogram_message_filter.cc',
       'child/child_histogram_message_filter.h',
+      'child/child_io_surface_manager_mac.cc',
+      'child/child_io_surface_manager_mac.h',
       'child/child_message_filter.cc',
       'child/child_message_filter.h',
       'child/child_process.cc',
       'child/child_process.h',
       'child/child_resource_message_filter.cc',
       'child/child_resource_message_filter.h',
       'child/child_shared_bitmap_manager.cc',
       'child/child_shared_bitmap_manager.h',
       'child/child_thread_impl.cc',
       'child/child_thread_impl.h',
@@ skipping 251 matching lines @@
         'child/npapi/webplugin_delegate_impl_mac.mm',
       ],
     }],
     ['OS=="win"', {
       'sources!': [
         'child/npapi/webplugin_delegate_impl_aura.cc',
       ],
     }],
   ],
 }