Don't add code dependencies on transitioning stores eagerly.

src/handles.h

Index: src/handles.h
diff --git a/src/handles.h b/src/handles.h
index 017bfee3d02fe0ecfdf3afdf30e55bf91f80d8c2..5dc4a5ddda2c42be14287f69c58a135540dbebad 100644
--- a/src/handles.h
+++ b/src/handles.h
@@ -155,6 +155,13 @@ inline Handle<T> handle(T* t) {
 }
 
 
+// Key comparison function for Map handles.
+inline bool operator<(const Handle<Map>& lhs, const Handle<Map>& rhs) {
+  // This is safe because maps don't move.
+  return *lhs < *rhs;

[mvstanton, 2014/05/02 06:34:16]

Seems like I see MStarzinger cringe every time we encode this assumption
somewhere.

[Benedikt Meurer, 2014/05/02 06:39:15]

Yeah... having some kind of ObjectTraits<T>::IsImmovable() would be nice, that
way we could add STATIC_ASSERT()s everywhere we depend on this...

+}
+
+
 class DeferredHandles;
 class HandleScopeImplementer;