Rename LookupSymbol calls to use Utf8 or OneByte in names.

src/handles.cc

Index: src/handles.cc
diff --git a/src/handles.cc b/src/handles.cc
index 7397cc00be9a8052301f6289f2fe349b70f572e3..3bc1f4bea03d831cf802c453eb69c15e6a13f49f 100644
--- a/src/handles.cc
+++ b/src/handles.cc
@@ -282,7 +282,7 @@ Handle<Object> SetPropertyWithInterceptor(Handle<JSObject> object,
 Handle<Object> GetProperty(Handle<JSReceiver> obj,
                            const char* name) {
   Isolate* isolate = obj->GetIsolate();
-  Handle<String> str = isolate->factory()->LookupAsciiSymbol(name);
+  Handle<String> str = isolate->factory()->LookupUtf8Symbol(name);
   CALL_HEAP_FUNCTION(isolate, obj->GetProperty(*str), Object);
 }
 
@@ -596,7 +596,8 @@ v8::Handle<v8::Array> GetKeysForIndexedInterceptor(Handle<JSReceiver> receiver,
 Handle<Object> GetScriptNameOrSourceURL(Handle<Script> script) {
   Isolate* isolate = script->GetIsolate();
   Handle<String> name_or_source_url_key =
-      isolate->factory()->LookupAsciiSymbol("nameOrSourceURL");
+      isolate->factory()->LookupOneByteSymbol(
+          STATIC_ASCII_VECTOR("nameOrSourceURL"));
   Handle<JSValue> script_wrapper = GetScriptWrapper(script);
   Handle<Object> property = GetProperty(script_wrapper,
                                         name_or_source_url_key);