Map v8::Function to JSReceiver + IsCallable

src/full-codegen/full-codegen.cc

Index: src/full-codegen/full-codegen.cc
diff --git a/src/full-codegen/full-codegen.cc b/src/full-codegen/full-codegen.cc
index 9b90fb684470331a0a27e696b17e41c37fff2825..008be18e363ecb52a8e36716f25c62c9484543a9 100644
--- a/src/full-codegen/full-codegen.cc
+++ b/src/full-codegen/full-codegen.cc
@@ -1363,9 +1363,9 @@ void FullCodeGenerator::VisitNativeFunctionLiteral(
   DCHECK(!fun_template.IsEmpty());
 
   // Instantiate the function and create a shared function info from it.
-  Handle<JSFunction> fun = Utils::OpenHandle(
+  Handle<JSFunction> fun = Handle<JSFunction>::cast(Utils::OpenHandle(
       *fun_template->GetFunction(v8_isolate->GetCurrentContext())
-           .ToLocalChecked());
+           .ToLocalChecked()));
   const int literals = fun->NumberOfLiterals();
   Handle<Code> code = Handle<Code>(fun->shared()->code());
   Handle<Code> construct_stub = Handle<Code>(fun->shared()->construct_stub());