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
diff --git a/ppapi/native_client/src/shared/ppapi_proxy/plugin_ppb_graphics_3d.h b/ppapi/native_client/src/shared/ppapi_proxy/plugin_ppb_graphics_3d.h
index 84af986ce65ab825d4ca02bfebf19bfce2fdd4b1..1785d7ad4177be2d4bd406da1e22f4043f6e02b7 100644
--- a/ppapi/native_client/src/shared/ppapi_proxy/plugin_ppb_graphics_3d.h
+++ b/ppapi/native_client/src/shared/ppapi_proxy/plugin_ppb_graphics_3d.h
@@ -32,6 +32,16 @@ class PluginGraphics3D : public PluginResource {
 
   static const PPB_Graphics3D* GetInterface();
   static const PPB_OpenGLES2* GetOpenGLESInterface();
+  static const PPB_OpenGLES2InstancedArrays*
+      GetOpenGLESInstancedArraysInterface();
+  static const PPB_OpenGLES2FramebufferBlit*
+      GetOpenGLESFramebufferBlitInterface();
+  static const PPB_OpenGLES2FramebufferMultisample*
+      GetOpenGLESFramebufferMultisampleInterface();
+  static const PPB_OpenGLES2ChromiumEnableFeature*
+      GetOpenGLESChromiumEnableFeatureInterface();
+  static const PPB_OpenGLES2ChromiumMapSub*
+      GetOpenGLESChromiumMapSubInterface();
 
   virtual bool InitFromBrowserResource(PP_Resource graphics3d_id);