Map v8::Function to JSReceiver + IsCallable

src/isolate.cc

Index: src/isolate.cc
diff --git a/src/isolate.cc b/src/isolate.cc
index 64a5c05b5a38d4706469776fa9f1c22142bccc95..ef987f15e6d36e7e71b89b0fd29dd5bed6284613 100644
--- a/src/isolate.cc
+++ b/src/isolate.cc
@@ -2674,9 +2674,9 @@ void Isolate::RunMicrotasks() {
         SaveContext save(this);
         set_context(microtask_function->context()->native_context());
         MaybeHandle<Object> maybe_exception;
-        MaybeHandle<Object> result =
-            Execution::TryCall(microtask_function, factory()->undefined_value(),
-                               0, NULL, &maybe_exception);
+        MaybeHandle<Object> result = Execution::TryCall(
+            this, microtask_function, factory()->undefined_value(), 0, NULL,
+            &maybe_exception);
         // If execution is terminating, just bail out.
         Handle<Object> exception;
         if (result.is_null() && maybe_exception.is_null()) {