[Not ready for review] Add Streams API support to FileReader

public/platform/WebBlobRegistry.h

 /*
  * Copyright (C) 2010 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 33 matching lines @@
 public:
     WEBKIT_EXPORT static WebBlobRegistry* create();
 
     virtual ~WebBlobRegistry() { }
 
     // Registers a blob URL referring to the specified blob data.
     virtual void registerBlobURL(const WebURL&, WebBlobData&) = 0;
 
     // Registers a stream URL referring to a stream with the specified media
     // type.
-    virtual void registerStreamURL(const WebURL&, const WebString&) { WEBKIT_ASSERT_NOT_REACHED(); }
+    virtual void registerStreamURL(const WebURL&, const WebString&) = 0;
 
     // Registers a blob or stream URL referring to the blob data or stream
     // identified by the specified srcURL.
     //
     // FIXME: Rename this to registerURL or registerStream after experimental
     // implementation is done.
     virtual void registerBlobURL(const WebURL&, const WebURL& srcURL) = 0;
 
     // Add data to the stream referred by the URL.
-    virtual void addDataToStream(const WebURL&, WebThreadSafeData&) { WEBKIT_ASSERT_NOT_REACHED(); }
+    virtual void addDataToStream(const WebURL&, WebThreadSafeData&) = 0;
 
     // Tell the registry that this stream won't receive any more data.
-    virtual void finalizeStream(const WebURL&) { WEBKIT_ASSERT_NOT_REACHED(); }
+    virtual void finalizeStream(const WebURL&) = 0;
 
     // Unregisters a blob or stream referred by the URL.
     //
     // FIXME: Rename this to unregisterURL or unregisterStreamURL after
     // experimental implementation is done.
     virtual void unregisterBlobURL(const WebURL&) = 0;
 };
 
 } // namespace WebKit
 
 #endif // WebBlobRegistry_h