Store both major and minor key on code stubs.

src/ic.h

Index: src/ic.h
diff --git a/src/ic.h b/src/ic.h
index 4e7542341af51ae536facebe9e193c69e881b752..154c156635f4c619480da012194ee023b45d6266 100644
--- a/src/ic.h
+++ b/src/ic.h
@@ -946,12 +946,9 @@ class CompareIC: public IC {
                            State state,
                            Handle<Map> map = Handle<Map>());
 
-  static void StubInfoToType(int stub_minor_key,
-                             Type** left_type,
-                             Type** right_type,
-                             Type** overall_type,
-                             Handle<Map> map,
-                             Zone* zone);
+  static void StubInfoToType(uint32_t stub_key, Type** left_type,
+                             Type** right_type, Type** overall_type,
+                             Handle<Map> map, Zone* zone);
 
   CompareIC(Isolate* isolate, Token::Value op)
       : IC(EXTRA_CALL_FRAME, isolate), op_(op) { }