Removed ScrollingCoordinator and a bunch of composited scrolling'

sky/engine/core/rendering/compositing/RenderLayerCompositor.h

 /*
  * Copyright (C) 2009 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 19 matching lines @@
 #include "core/rendering/compositing/CompositingReasonFinder.h"
 #include "platform/graphics/GraphicsLayerClient.h"
 #include "wtf/HashMap.h"
 
 namespace blink {
 
 class DocumentLifecycle;
 class GraphicsLayer;
 class GraphicsLayerFactory;
 class Page;
-class ScrollingCoordinator;
 
 enum CompositingUpdateType {
     CompositingUpdateNone,
     CompositingUpdateAfterGeometryChange,
     CompositingUpdateAfterCompositingInputChange,
     CompositingUpdateRebuildTree,
 };
 
 enum CompositingStateTransitionType {
     NoCompositingStateChange,
@@ skipping 79 matching lines @@
     void updateRootLayerAttachment();
     void updateRootLayerPosition();
 
     void setIsInWindow(bool);
 
     // Update the geometry of the layers used for clipping and scrolling in frames.
     void frameViewDidChangeLocation(const IntPoint& contentsOffset);
     void frameViewDidChangeSize();
     void rootFixedBackgroundsChanged();
 
-    bool scrollingLayerDidChange(RenderLayer*);
-
     String layerTreeAsText(LayerTreeFlags);
 
-    GraphicsLayer* layerForHorizontalScrollbar() const { return m_layerForHorizontalScrollbar.get(); }
-    GraphicsLayer* layerForVerticalScrollbar() const { return m_layerForVerticalScrollbar.get(); }
-
     void resetTrackedPaintInvalidationRects();
     void setTracksPaintInvalidations(bool);
 
     virtual String debugName(const GraphicsLayer*) override;
     DocumentLifecycle& lifecycle() const;
 
     void updatePotentialCompositingReasonsFromStyle(RenderLayer*);
 
     // Whether the layer could ever be composited.
     bool canBeComposited(const RenderLayer*) const;
@@ skipping 19 matching lines @@
 
     void updateWithoutAcceleratedCompositing(CompositingUpdateType);
     void updateIfNeeded();
 
     void ensureRootLayer();
     void destroyRootLayer();
 
     void attachRootLayer(RootLayerAttachment);
     void detachRootLayer();
 
-    void updateOverflowControlsLayers();
-
     Page* page() const;
 
     GraphicsLayerFactory* graphicsLayerFactory() const;
-    ScrollingCoordinator* scrollingCoordinator() const;
 
     void enableCompositingModeIfNeeded();
 
-    bool requiresHorizontalScrollbarLayer() const;
-    bool requiresVerticalScrollbarLayer() const;
-
     RenderView& m_renderView;
     OwnPtr<GraphicsLayer> m_rootContentLayer;
     OwnPtr<GraphicsLayer> m_rootTransformLayer;
 
     CompositingReasonFinder m_compositingReasonFinder;
 
     CompositingUpdateType m_pendingUpdateType;
 
     bool m_compositing;
 
     // The root layer doesn't composite if it's a non-scrollable frame.
     // So, after a layout we set this dirty bit to know that we need
     // to recompute whether the root layer should composite even if
     // none of its descendants composite.
     // FIXME: Get rid of all the callers of setCompositingModeEnabled
     // except the one in updateIfNeeded, then rename this to
     // m_compositingDirty.
     bool m_rootShouldAlwaysCompositeDirty;
     bool m_needsUpdateFixedBackground;
     bool m_isTrackingPaintInvalidations; // Used for testing.
 
     RootLayerAttachment m_rootLayerAttachment;
 
     // Enclosing container layer, which clips for iframe content
     OwnPtr<GraphicsLayer> m_containerLayer;
     OwnPtr<GraphicsLayer> m_scrollLayer;
 
     // Enclosing layer for overflow controls and the clipping layer
     OwnPtr<GraphicsLayer> m_overflowControlsHostLayer;
-
-    // Layers for overflow controls
-    OwnPtr<GraphicsLayer> m_layerForHorizontalScrollbar;
-    OwnPtr<GraphicsLayer> m_layerForVerticalScrollbar;
 };
 
 } // namespace blink
 
 #endif // RenderLayerCompositor_h