[promises] Move PromiseResolveThenableJob to c++

src/objects-debug.cc

Index: src/objects-debug.cc
diff --git a/src/objects-debug.cc b/src/objects-debug.cc
index 5a5888995533a64f6978831e431c7fc2cb668e58..eb9abee57095af657e1c417aebb83ed8a9264472 100644
--- a/src/objects-debug.cc
+++ b/src/objects-debug.cc
@@ -900,6 +900,16 @@ void Box::BoxVerify() {
   value()->ObjectVerify();
 }
 
+void PromiseContainer::PromiseContainerVerify() {
+  CHECK(IsPromiseContainer());
+  promise()->ObjectVerify();
+  thenable()->ObjectVerify();
+  VerifyPointer(then());
+  VerifyPointer(resolve());
+  VerifyPointer(reject());

[adamk, 2016/09/08 22:28:18]

Why aren't these also using ObjectVerify()?

[gsathya, 2016/09/14 00:39:14]

The other structs use VerifyPointer so I made all of PromiseContainer use that
initially, but when I refactored it I changed it to ObjectVerify because it
seems to be a stronger check. Updated these to use ObjectVerify too.

+  before_debug_event()->ObjectVerify();
+  after_debug_event()->ObjectVerify();
+}
 
 void PrototypeInfo::PrototypeInfoVerify() {
   CHECK(IsPrototypeInfo());