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

ppapi/ppapi_shared.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_shared',
       'type': 'static_library',
       'dependencies': [
         'ppapi.gyp:ppapi_c',
         '../base/base.gyp:base',
         '../base/third_party/dynamic_annotations/dynamic_annotations.gyp:dynamic_annotations',
         '../build/temp_gyp/googleurl.gyp:googleurl',
+        '../gpu/gpu.gyp:gles2_implementation',
         '../skia/skia.gyp:skia',
         '../third_party/icu/icu.gyp:icuuc',
         '../ui/gfx/surface/surface.gyp:surface',
       ],
       'include_dirs': [
         '..',
       ],
       'export_dependent_settings': [
         '../base/base.gyp:base',
       ],
       'sources': [
         'shared_impl/audio_config_impl.cc',
         'shared_impl/audio_config_impl.h',
         'shared_impl/audio_impl.cc',
         'shared_impl/audio_impl.h',
         'shared_impl/char_set_impl.cc',
         'shared_impl/char_set_impl.h',
         'shared_impl/crypto_impl.cc',
         'shared_impl/crypto_impl.h',
         'shared_impl/font_impl.cc',
         'shared_impl/font_impl.h',
         'shared_impl/function_group_base.cc',
         'shared_impl/function_group_base.h',
+        'shared_impl/graphics_3d_impl.cc',
+        'shared_impl/graphics_3d_impl.h',
         'shared_impl/image_data_impl.cc',
         'shared_impl/image_data_impl.h',
         'shared_impl/input_event_impl.cc',
         'shared_impl/input_event_impl.h',
         'shared_impl/instance_impl.cc',
         'shared_impl/instance_impl.h',
         'shared_impl/ppapi_preferences.cc',
         'shared_impl/ppapi_preferences.h',
         'shared_impl/ppp_instance_combined.cc',
         'shared_impl/ppp_instance_combined.h',
@@ skipping 52 matching lines @@
         'thunk/ppb_flash_tcp_socket_api.h',
         'thunk/ppb_flash_tcp_socket_thunk.cc',
         'thunk/ppb_font_api.h',
         'thunk/ppb_font_thunk.cc',
         'thunk/ppb_fullscreen_thunk.cc',
         'thunk/ppb_gles_chromium_texture_mapping_thunk.cc',
         'thunk/ppb_graphics_2d_api.h',
         'thunk/ppb_graphics_2d_thunk.cc',
         'thunk/ppb_graphics_3d_api.h',
         'thunk/ppb_graphics_3d_thunk.cc',
+        'thunk/ppb_graphics_3d_trusted_thunk.cc',
         'thunk/ppb_image_data_api.h',
         'thunk/ppb_image_data_thunk.cc',
         'thunk/ppb_image_data_trusted_thunk.cc',
         'thunk/ppb_instance_api.h',
         'thunk/ppb_instance_thunk.cc',
         'thunk/ppb_layer_compositor_api.h',
         'thunk/ppb_layer_compositor_thunk.cc',
         'thunk/ppb_messaging_thunk.cc',
         'thunk/ppb_pdf_api.h',
         'thunk/ppb_scrollbar_api.h',
@@ skipping 13 matching lines @@
         'thunk/ppb_video_layer_api.h',
         'thunk/ppb_video_layer_thunk.cc',
         'thunk/ppb_widget_api.h',
         'thunk/ppb_widget_thunk.cc',
         'thunk/ppb_zoom_thunk.cc',
         'thunk/thunk.h',
       ],
     },
   ],
 }