O3D Mac: Add CoreAnimation support

plugin/cross/o3d_glue.cc

 /*
  * Copyright 2009, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 124 matching lines @@
       mac_fullscreen_overlay_window_(0),
 #endif
       mac_window_selected_tab_(0),
       mac_cocoa_window_(0),
       mac_surface_hidden_(0),
       mac_2d_context_(0),
       mac_agl_context_(0),
       mac_cgl_context_(0),
       mac_cgl_pbuffer_(0),
       last_mac_event_time_(0),
+      gl_layer_(NULL),
 #ifdef O3D_PLUGIN_ENABLE_FULLSCREEN_MSG
       time_to_hide_overlay_(0.0),
 #endif
 #endif  // OS_MACOSX
 #ifdef OS_LINUX
       display_(NULL),
       window_(0),
       fullscreen_window_(0),
       xt_widget_(NULL),
       xt_app_context_(NULL),
@@ skipping 1039 matching lines @@
   PluginObject *plugin_object = static_cast<PluginObject *>(npp->pdata);
   if (plugin_object) {  // May not be initialized yet.
     return plugin_object->client()->ProfileToString();
   } else {
     return "";
   }
 }
 
 }  // namespace globals
 }  // namespace glue