A64: Synchronize with r15204.

src/property.h

Index: src/property.h
diff --git a/src/property.h b/src/property.h
index f853fc8ba035519cbcbfe1288a0027ee3cc91e8e..f36bc7a488cda84a35774282302eb82f14137898 100644
--- a/src/property.h
+++ b/src/property.h
@@ -351,7 +351,7 @@ class LookupResult BASE_EMBEDDED {
         Object* value;
         value = holder()->property_dictionary()->ValueAt(GetDictionaryEntry());
         if (holder()->IsGlobalObject()) {
-          value = JSGlobalPropertyCell::cast(value)->value();
+          value = PropertyCell::cast(value)->value();
         }
         return value;
       }
@@ -392,6 +392,11 @@ class LookupResult BASE_EMBEDDED {
     return IsTransition() && GetTransitionDetails(map).type() == FIELD;
   }
 
+  bool IsTransitionToConstantFunction(Map* map) {
+    return IsTransition() &&
+        GetTransitionDetails(map).type() == CONSTANT_FUNCTION;
+  }
+
   Map* GetTransitionMap() {
     ASSERT(IsTransition());
     return Map::cast(GetValue());