Mac: Always use surfaceless mode

content/content_common.gypi

 # 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.
 
 {
   'dependencies': [
     '../base/base.gyp:base',
     '../components/tracing.gyp:tracing',
     '../gpu/command_buffer/command_buffer.gyp:gles2_utils',
     '../net/net.gyp:net',
@@ skipping 320 matching lines @@
       'common/gpu/gpu_messages.h',
       'common/gpu/gpu_process_launch_causes.h',
       'common/gpu/gpu_result_codes.h',
       'common/gpu/gpu_stream_priority.h',
       'common/gpu/gpu_surface_lookup.cc',
       'common/gpu/gpu_surface_lookup.h',
       'common/gpu/gpu_watchdog.h',
       'common/gpu/image_transport_surface.cc',
       'common/gpu/image_transport_surface.h',
       'common/gpu/image_transport_surface_android.cc',
-      'common/gpu/image_transport_surface_calayer_mac.h',
-      'common/gpu/image_transport_surface_calayer_mac.mm',
-      'common/gpu/image_transport_surface_fbo_mac.h',
-      'common/gpu/image_transport_surface_fbo_mac.mm',
-      'common/gpu/image_transport_surface_iosurface_mac.cc',
-      'common/gpu/image_transport_surface_iosurface_mac.h',
       'common/gpu/image_transport_surface_linux.cc',
       'common/gpu/image_transport_surface_overlay_mac.h',
       'common/gpu/image_transport_surface_overlay_mac.mm',
       'common/gpu/image_transport_surface_mac.mm',
       'common/gpu/image_transport_surface_win.cc',
       'common/gpu/media/fake_video_decode_accelerator.cc',
       'common/gpu/media/fake_video_decode_accelerator.h',
       'common/gpu/media/gpu_jpeg_decode_accelerator.cc',
       'common/gpu/media/gpu_jpeg_decode_accelerator.h',
       'common/gpu/media/gpu_video_accelerator_util.cc',
@@ skipping 747 matching lines @@
         'common/gpu/client/gpu_memory_buffer_impl_ozone.cc',
         'common/gpu/client/gpu_memory_buffer_impl_ozone_native_pixmap.cc',
         'common/gpu/client/gpu_memory_buffer_impl_ozone_native_pixmap.h',
         'common/gpu/gpu_memory_buffer_factory_ozone.cc',
         'common/gpu/gpu_memory_buffer_factory_ozone_native_pixmap.cc',
         'common/gpu/gpu_memory_buffer_factory_ozone_native_pixmap.h',
       ],
     }],
   ],
 }