Revert of Call directly to c callbacks in Invoke instead of transitioning to js and back out.

src/execution.cc

Index: src/execution.cc
diff --git a/src/execution.cc b/src/execution.cc
index 9f418ac5d843e0a1f300974313e5c404e28d58fb..998afb8524e6aab5c81205e1dd3d84b75c537c8e 100644
--- a/src/execution.cc
+++ b/src/execution.cc
@@ -57,26 +57,6 @@
     int argc,
     Handle<Object> args[]) {
   Isolate* isolate = function->GetIsolate();
-
-  // api callbacks can be called directly.
-  if (!is_construct && function->shared()->IsApiFunction()) {
-    SaveContext save(isolate);
-    isolate->set_context(function->context());
-    if (receiver->IsGlobalObject()) {
-      receiver = handle(Handle<GlobalObject>::cast(receiver)->global_proxy());
-    }
-    DCHECK(function->context()->global_object()->IsGlobalObject());
-    auto value = Builtins::InvokeApiFunction(function, receiver, argc, args);
-    bool has_exception = value.is_null();
-    DCHECK(has_exception == isolate->has_pending_exception());
-    if (has_exception) {
-      isolate->ReportPendingMessages();
-      return MaybeHandle<Object>();
-    } else {
-      isolate->clear_pending_message();
-    }
-    return value;
-  }
 
   // Entering JavaScript.
   VMState<JS> state(isolate);