Avoid TLS accesses in Object::Lookup and Object::GetPrototype.

src/ic-inl.h

Index: src/ic-inl.h
diff --git a/src/ic-inl.h b/src/ic-inl.h
index 77f409a1ef2e7f249bc7a2b8dcc32dabeb098e3a..11ab7101585a9aed9aac1aa5823015f7a321e253 100644
--- a/src/ic-inl.h
+++ b/src/ic-inl.h
@@ -129,8 +129,11 @@ InlineCacheHolderFlag IC::GetCodeCacheForObject(JSObject* object,
 }
 
 
-JSObject* IC::GetCodeCacheHolder(Object* object, InlineCacheHolderFlag holder) {
-  Object* map_owner = (holder == OWN_MAP ? object : object->GetPrototype());
+JSObject* IC::GetCodeCacheHolder(Isolate* isolate,
+                                 Object* object,
+                                 InlineCacheHolderFlag holder) {
+  Object* map_owner =
+      holder == OWN_MAP ? object : object->GetPrototype(isolate);
   ASSERT(map_owner->IsJSObject());
   return JSObject::cast(map_owner);
 }