Move the contents of api-natives.js to c++

src/execution.h

Index: src/execution.h
diff --git a/src/execution.h b/src/execution.h
index ae263bddd7c42bd12e486b7890f2e741bc0a24f3..47cbb08f03a9b191bef437c2fc5280912de21097 100644
--- a/src/execution.h
+++ b/src/execution.h
@@ -98,12 +98,6 @@ class Execution FINAL : public AllStatic {
   static Handle<Object> CharAt(Handle<String> str, uint32_t index);
 
   static Handle<Object> GetFunctionFor();
-  MUST_USE_RESULT static MaybeHandle<JSFunction> InstantiateFunction(
-      Handle<FunctionTemplateInfo> data);
-  MUST_USE_RESULT static MaybeHandle<JSObject> InstantiateObject(
-      Handle<ObjectTemplateInfo> data);
-  MUST_USE_RESULT static MaybeHandle<Object> ConfigureInstance(
-      Isolate* isolate,  Handle<Object> instance, Handle<Object> data);
   static Handle<String> GetStackTraceLine(Handle<Object> recv,
                                           Handle<JSFunction> fun,
                                           Handle<Object> pos,