Convert UnaryOpStub to a HydrogenCodeStub

src/property-details.h

Index: src/property-details.h
diff --git a/src/property-details.h b/src/property-details.h
index b0d10e1270aaaceca63430166ef5524e90043598..ac365634cdc7c44064d2edfc2b4a9952ebaa3b3f 100644
--- a/src/property-details.h
+++ b/src/property-details.h
@@ -55,6 +55,8 @@ namespace v8 {
 namespace internal {
 
 class Smi;
+class Type;
+class TypeInfo;
 
 // Type of properties.
 // Order of properties is significant.
@@ -101,6 +103,10 @@ class Representation {
 
   static Representation FromKind(Kind kind) { return Representation(kind); }
 
+  // TODO(rossberg): this should die eventually.
+  static Representation FromType(TypeInfo info);
+  static Representation FromType(Handle<Type> type);
+
   bool Equals(const Representation& other) const {
     return kind_ == other.kind_;
   }