Revert 123696 - Add Pepper support for several GL extensions

ppapi/native_client/src/shared/ppapi_proxy/plugin_ppb_graphics_3d.h

Index: ppapi/native_client/src/shared/ppapi_proxy/plugin_ppb_graphics_3d.h
===================================================================
--- ppapi/native_client/src/shared/ppapi_proxy/plugin_ppb_graphics_3d.h	(revision 123696)
+++ ppapi/native_client/src/shared/ppapi_proxy/plugin_ppb_graphics_3d.h	(working copy)
@@ -11,7 +11,6 @@
 #include "ppapi/c/pp_graphics_3d.h"
 #include "ppapi/c/ppb_graphics_3d.h"
 #include "ppapi/c/ppb_opengles2.h"
-#include "ppapi/c/dev/ppb_opengles2ext_dev.h"
 #include "ppapi/c/pp_instance.h"
 
 namespace gpu {
@@ -33,16 +32,6 @@
 
   static const PPB_Graphics3D* GetInterface();
   static const PPB_OpenGLES2* GetOpenGLESInterface();
-  static const PPB_OpenGLES2InstancedArrays_Dev*
-      GetOpenGLESInstancedArraysInterface();
-  static const PPB_OpenGLES2FramebufferBlit_Dev*
-      GetOpenGLESFramebufferBlitInterface();
-  static const PPB_OpenGLES2FramebufferMultisample_Dev*
-      GetOpenGLESFramebufferMultisampleInterface();
-  static const PPB_OpenGLES2ChromiumEnableFeature_Dev*
-      GetOpenGLESChromiumEnableFeatureInterface();
-  static const PPB_OpenGLES2ChromiumMapSub_Dev*
-      GetOpenGLESChromiumMapSubInterface();
 
   virtual bool InitFromBrowserResource(PP_Resource graphics3d_id);