Convert ppapi/shared to use TrackedCallback.

webkit/plugins/ppapi/ppb_graphics_3d_impl.cc

Index: webkit/plugins/ppapi/ppb_graphics_3d_impl.cc
diff --git a/webkit/plugins/ppapi/ppb_graphics_3d_impl.cc b/webkit/plugins/ppapi/ppb_graphics_3d_impl.cc
index 87b25a18a1edddfe15f1c45e5b81f95bb5054dcc..fbe89cf4ed0e96a44f95782cadfb520b48d716a3 100644
--- a/webkit/plugins/ppapi/ppb_graphics_3d_impl.cc
+++ b/webkit/plugins/ppapi/ppb_graphics_3d_impl.cc
@@ -53,7 +53,7 @@ PP_Graphics3DTrustedState PPStateFromGPUState(
 }  // namespace.
 
 PPB_Graphics3D_Impl::PPB_Graphics3D_Impl(PP_Instance instance)
-    : Resource(instance),
+    : PPB_Graphics3D_Shared(instance),
       bound_to_instance_(false),
       commit_pending_(false),
       weak_ptr_factory_(ALLOW_THIS_IN_INITIALIZER_LIST(this)) {
@@ -84,10 +84,6 @@ PP_Resource PPB_Graphics3D_Impl::CreateRaw(PP_Instance instance,
   return graphics_3d->GetReference();
 }
 
-PPB_Graphics3D_API* PPB_Graphics3D_Impl::AsPPB_Graphics3D_API() {
-  return this;
-}
-
 PP_Bool PPB_Graphics3D_Impl::InitCommandBuffer() {
   return PP_FromBool(GetCommandBuffer()->Initialize());
 }