Remove moar composited scrolling from sky

sky/engine/public/platform/WebLayer.h

 /*
  * Copyright (C) 2011 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:
  *
  * 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
@@ skipping 148 matching lines @@
     // its nearest clipping ancestor. Note, the clip parent must be an ancestor.
     // This is not a requirement of the scroll parent.
     virtual void setClipParent(WebLayer*) = 0;
 
     // Scrolling
     virtual void setScrollPosition(WebPoint) = 0;
     virtual WebPoint scrollPosition() const = 0;
 
     // To set a WebLayer as scrollable we must specify the corresponding clip layer.
     virtual void setScrollClipLayer(WebLayer*) = 0;
-    virtual bool scrollable() const = 0;
-    virtual void setUserScrollable(bool horizontal, bool vertical) = 0;
-    virtual bool userScrollableHorizontal() const = 0;
-    virtual bool userScrollableVertical() const = 0;
-
-    virtual void setHaveWheelEventHandlers(bool) = 0;
-    virtual bool haveWheelEventHandlers() const = 0;
-
-    virtual void setHaveScrollEventHandlers(bool) = 0;
-    virtual bool haveScrollEventHandlers() const = 0;
-
-    virtual void setShouldScrollOnMainThread(bool) = 0;
-    virtual bool shouldScrollOnMainThread() const = 0;
-
-    virtual void setNonFastScrollableRegion(const WebVector<WebRect>&) = 0;
 
     // The scroll client is notified when the scroll position of the WebLayer
     // changes. Only a single scroll client can be set for a WebLayer at a time.
     // The WebLayer does not take ownership of the scroll client, and it is the
     // responsibility of the client to reset the layer's scroll client before
     // deleting the scroll client.
     virtual void setScrollClient(WebLayerScrollClient*) = 0;
 
     // Forces this layer to use a render surface. There is no benefit in doing
     // so, but this is to facilitate benchmarks and tests.
     virtual void setForceRenderSurface(bool) = 0;
 
     // True if the layer is not part of a tree attached to a WebLayerTreeView.
     virtual bool isOrphan() const = 0;
 
     virtual void setWebLayerClient(WebLayerClient*) = 0;
 };
 
 } // namespace blink
 
 #endif // WebLayer_h