Use placement new for ZoneLists in the parser.

src/zone-inl.h

Index: src/zone-inl.h
diff --git a/src/zone-inl.h b/src/zone-inl.h
index 17e83dc5ff496c9f79d9a82bb5fca9d36a7d7f22..b9f9dbec9a673ce0c31d621f34a51092a926fa50 100644
--- a/src/zone-inl.h
+++ b/src/zone-inl.h
@@ -102,11 +102,23 @@ void* ZoneObject::operator new(size_t size, Zone* zone) {
 }
 
 
-inline void* ZoneListAllocationPolicy::New(int size) {
+void* ZoneListAllocationPolicy::New(int size) {
   return ZONE->New(size);
 }
 
 
+template <typename T>
+void* ZoneList<T>::operator new(size_t size) {
+  return ZONE->New(static_cast<int>(size));
+}
+
+
+template <typename T>
+void* ZoneList<T>::operator new(size_t size, Zone* zone) {
+  return zone->New(static_cast<int>(size));
+}
+
+
 ZoneScope::ZoneScope(ZoneScopeMode mode)
     : isolate_(Isolate::Current()),
       mode_(mode) {