[promises] Move PromiseReactionJob to c++

src/objects-debug.cc

Index: src/objects-debug.cc
diff --git a/src/objects-debug.cc b/src/objects-debug.cc
index 75320677c557e18bce4085eef8e3793614623ce0..0eb042903b5832c26df7d20ea940dadefa8af17d 100644
--- a/src/objects-debug.cc
+++ b/src/objects-debug.cc
@@ -922,6 +922,11 @@ void PromiseContainer::PromiseContainerVerify() {
   after_debug_event()->ObjectVerify();
 }
 
+void PromiseReactionJobInfo::PromiseReactionJobInfoVerify() {
+  CHECK(IsPromiseReactionJobInfo());
+  CHECK(tasks()->IsJSArray() || tasks()->IsCallable());

[adamk, 2016/10/12 16:18:11]

Aren't there more things you could check here? Basically I'd expect to see
CHECKs about all the expected states of the fields.

[gsathya, 2016/10/12 20:08:53]

Yeah I was curious about this too. I guess you missed my question in the
previous reply.

Done.

+}
+
 void JSModuleNamespace::JSModuleNamespaceVerify() {
   CHECK(IsJSModuleNamespace());
   module()->ObjectVerify();