Completed the implementation for PPB_Graphics3D interface. Mostly copied from the implementations...

ppapi/ppapi_proxy.gypi

 # Copyright (c) 2011 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.
 
 {
   'targets': [
     {
       'target_name': 'ppapi_proxy',
       'type': 'static_library',
       'dependencies': [
@@ skipping 78 matching lines @@
         'proxy/ppb_flash_menu_proxy.cc',
         'proxy/ppb_flash_menu_proxy.h',
         'proxy/ppb_flash_net_connector_proxy.cc',
         'proxy/ppb_flash_net_connector_proxy.h',
         'proxy/ppb_flash_tcp_socket_proxy.cc',
         'proxy/ppb_flash_tcp_socket_proxy.h',
         'proxy/ppb_font_proxy.cc',
         'proxy/ppb_font_proxy.h',
         'proxy/ppb_graphics_2d_proxy.cc',
         'proxy/ppb_graphics_2d_proxy.h',
+        'proxy/ppb_graphics_3d_proxy.cc',
+        'proxy/ppb_graphics_3d_proxy.h',
         'proxy/ppb_image_data_proxy.cc',
         'proxy/ppb_image_data_proxy.h',
         'proxy/ppb_input_event_proxy.cc',
         'proxy/ppb_input_event_proxy.h',
         'proxy/ppb_instance_proxy.cc',
         'proxy/ppb_instance_proxy.h',
         'proxy/ppb_memory_proxy.cc',
         'proxy/ppb_memory_proxy.h',
         'proxy/ppb_opengles2_proxy.cc',
         'proxy/ppb_opengles2_proxy.h',
@@ skipping 45 matching lines @@
         ['OS=="win"', {
         }],
         ['OS=="linux"', {
         }],
         ['OS=="mac"', {
         }]
       ],
     },
   ],
 }