Hydrogen: fix keyed loads with string keys

src/type-info.h

Index: src/type-info.h
diff --git a/src/type-info.h b/src/type-info.h
index 8fe581813b35cc94e3e3d7dd02d06db4ef4ee4a9..b217ccc46e4598d6dcbb3ab8d993e14af00a624f 100644
--- a/src/type-info.h
+++ b/src/type-info.h
@@ -38,12 +38,14 @@ class TypeFeedbackOracle: public ZoneObject {
   void GetStoreModeAndKeyType(TypeFeedbackId id,
                               KeyedAccessStoreMode* store_mode,
                               IcCheckType* key_type);
+  void GetLoadKeyType(TypeFeedbackId id, IcCheckType* key_type);
 
   void PropertyReceiverTypes(TypeFeedbackId id, Handle<String> name,
                              SmallMapList* receiver_types);
   void KeyedPropertyReceiverTypes(TypeFeedbackId id,
                                   SmallMapList* receiver_types,
-                                  bool* is_string);
+                                  bool* is_string,
+                                  IcCheckType* key_type);
   void AssignmentReceiverTypes(TypeFeedbackId id,
                                Handle<String> name,
                                SmallMapList* receiver_types);