Simplify CachedResource::data

Source/WebCore/loader/cache/CachedTextTrack.cpp

 /*
  * Copyright (C) 2011 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 28 matching lines @@
 
 CachedTextTrack::CachedTextTrack(const ResourceRequest& resourceRequest)
     : CachedResource(resourceRequest, TextTrackResource)
 {
 }
 
 CachedTextTrack::~CachedTextTrack()
 {
 }
 
-void CachedTextTrack::data(PassRefPtr<ResourceBuffer> data, bool allDataReceived)
+void CachedTextTrack::data(PassRefPtr<ResourceBuffer> data)
 {
-    m_data = data;
-    setEncodedSize(m_data.get() ? m_data->size() : 0);
-
+    CachedResource::data(data);
     CachedResourceClientWalker<CachedResourceClient> walker(m_clients);
     while (CachedResourceClient *client = walker.next())
         client->deprecatedDidReceiveCachedResource(this);
-
-    if (!allDataReceived)
-        return;
-    
-    setLoading(false);
-    checkNotify();
 }
 
 }