Remove untrusted scripting support.

ppapi/shared_impl/ppp_instance_combined.cc

Index: ppapi/shared_impl/ppp_instance_combined.cc
diff --git a/ppapi/shared_impl/ppp_instance_combined.cc b/ppapi/shared_impl/ppp_instance_combined.cc
index 8da13af5727c54e1eb437254417d8aa972e90599..ce3d2c4c01cd057551066c15b32b8be9b69600f5 100644
--- a/ppapi/shared_impl/ppp_instance_combined.cc
+++ b/ppapi/shared_impl/ppp_instance_combined.cc
@@ -8,20 +8,7 @@ namespace ppapi {
 
 PPP_Instance_Combined::PPP_Instance_Combined(
     const PPP_Instance_0_5& instance_if)
-    : PPP_Instance_0_5(instance_if),
-      GetInstanceObject_0_4(NULL) {
-}
-
-PPP_Instance_Combined::PPP_Instance_Combined(
-    const PPP_Instance_0_4& instance_if)
-    : PPP_Instance_0_5(),  // Zero-initialize.
-      GetInstanceObject_0_4(instance_if.GetInstanceObject) {
-  DidCreate = instance_if.DidCreate;
-  DidDestroy = instance_if.DidDestroy;
-  DidChangeView = instance_if.DidChangeView;
-  DidChangeFocus = instance_if.DidChangeFocus;
-  HandleInputEvent = instance_if.HandleInputEvent;
-  HandleDocumentLoad = instance_if.HandleDocumentLoad;
+    : PPP_Instance_0_5(instance_if) {
 }
 
 }  // namespace ppapi