Remove some dead code in WebFrame

sky/engine/public/web/WebFrame.h

 /*
  * Copyright (C) 2009 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 137 matching lines @@
     // frame. There can be many V8 contexts associated with this frame, one for
     // each isolated world and one for the main world. If you don't know what
     // the "main world" or an "isolated world" is, then you probably shouldn't
     // be calling this API.
     virtual v8::Local<v8::Context> mainWorldScriptContext() const = 0;
 
     // Navigation ----------------------------------------------------------
 
     virtual void load(const WebURL&, mojo::ScopedDataPipeConsumerHandle) = 0;
 
-    // Sets the referrer for the given request to be the specified URL or
-    // if that is null, then it sets the referrer to the referrer that the
-    // frame would use for subresources.  NOTE: This method also filters
-    // out invalid referrers (e.g., it is invalid to send a HTTPS URL as
-    // the referrer for a HTTP request).
-    virtual void setReferrerForRequest(WebURLRequest&, const WebURL&) = 0;
-
-    // Returns the number of registered unload listeners.
-    virtual unsigned unloadListenerCount() const = 0;
-
 
     // Editing -------------------------------------------------------------
 
     // Replaces the selection with the given text.
     virtual void replaceSelection(const WebString& text) = 0;
 
     virtual void insertText(const WebString& text) = 0;
 
     virtual void setMarkedText(const WebString& text, unsigned location, unsigned length) = 0;
     virtual void unmarkText() = 0;
@@ skipping 86 matching lines @@
 private:
 };
 
 #if BLINK_IMPLEMENTATION
 Frame* toCoreFrame(const WebFrame*);
 #endif
 
 } // namespace blink
 
 #endif  // SKY_ENGINE_PUBLIC_WEB_WEBFRAME_H_