Make delegated software renderer work on Mac

content/content_browser.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_static',
     '../crypto/crypto.gyp:crypto',
     '../google_apis/google_apis.gyp:google_apis',
     '../net/net.gyp:net',
@@ skipping 360 matching lines @@
     'browser/compositor/owned_mailbox.h',
     'browser/compositor/owned_mailbox.cc',
     'browser/compositor/reflector_impl.cc',
     'browser/compositor/reflector_impl.h',
     'browser/compositor/resize_lock.cc',
     'browser/compositor/resize_lock.h',
     'browser/compositor/gpu_browser_compositor_output_surface.cc',
     'browser/compositor/gpu_browser_compositor_output_surface.h',
     'browser/compositor/software_browser_compositor_output_surface.cc',
     'browser/compositor/software_browser_compositor_output_surface.h',
+    'browser/compositor/software_output_device_mac.mm',
+    'browser/compositor/software_output_device_mac.h',
     'browser/compositor/software_output_device_ozone.cc',
     'browser/compositor/software_output_device_ozone.h',
     'browser/compositor/software_output_device_win.cc',
     'browser/compositor/software_output_device_win.h',
     'browser/compositor/software_output_device_x11.cc',
     'browser/compositor/software_output_device_x11.h',
     'browser/context_factory.cc',
     'browser/cross_site_request_manager.cc',
     'browser/cross_site_request_manager.h',
     'browser/devtools/devtools_agent_host_impl.cc',
@@ skipping 1340 matching lines @@
         '../build/linux/system.gyp:dbus',
         '../dbus/dbus.gyp:dbus',
       ],
     }, {  # OS != "linux" or use_dbus==0
       'sources!': [
         'browser/geolocation/wifi_data_provider_linux.cc',
       ],
     }],
   ],
 }