Replace IOSurfaceManager by directly passing IOSurface Mach ports over Chrome IPC.

ui/accelerated_widget_mac/accelerated_widget_mac.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,
   },
   'targets': [
     {
       # GN version: //ui/accelerated_widget_mac
       'target_name': 'accelerated_widget_mac',
       'type': '<(component)',
       'sources': [
         'accelerated_widget_mac.h',
         'accelerated_widget_mac.mm',
         'accelerated_widget_mac_export.h',
         'display_link_mac.cc',
         'display_link_mac.h',
         'io_surface_context.h',
         'io_surface_context.mm',
-        'surface_handle_types.cc',
-        'surface_handle_types.h',
         'window_resize_helper_mac.cc',
         'window_resize_helper_mac.h',
       ],
       'defines': [
         'ACCELERATED_WIDGET_MAC_IMPLEMENTATION',
       ],
       'dependencies': [
         '<(DEPTH)/base/base.gyp:base',
         '<(DEPTH)/skia/skia.gyp:skia',
         '<(DEPTH)/ui/base/ui_base.gyp:ui_base',
         '<(DEPTH)/ui/events/events.gyp:events_base',
         '<(DEPTH)/ui/gfx/gfx.gyp:gfx_geometry',
         '<(DEPTH)/ui/gl/gl.gyp:gl',
       ],
       'link_settings': {
         'libraries': [
           '$(SDKROOT)/System/Library/Frameworks/QuartzCore.framework',
         ],
       },
     },
   ],
 }