Replace our home-grown BitCast with bit_cast from Chrome/Google3.

src/property.cc

Index: src/property.cc
diff --git a/src/property.cc b/src/property.cc
index efb58a28c789bf297e5f23b10a8c10bfc51cee92..f0ff95c0fe2f3e93761630fce988f511255c8e74 100644
--- a/src/property.cc
+++ b/src/property.cc
@@ -13,8 +13,8 @@ namespace internal {
 void LookupResult::Iterate(ObjectVisitor* visitor) {
   LookupResult* current = this;  // Could be NULL.
   while (current != NULL) {
-    visitor->VisitPointer(BitCast<Object**>(&current->holder_));
-    visitor->VisitPointer(BitCast<Object**>(&current->transition_));
+    visitor->VisitPointer(bit_cast<Object**>(&current->holder_));
+    visitor->VisitPointer(bit_cast<Object**>(&current->transition_));
     current = current->next_;
   }
 }