Remove WebScroll*

sky/engine/public/platform/WebCompositorSupport.h

Index: sky/engine/public/platform/WebCompositorSupport.h
diff --git a/sky/engine/public/platform/WebCompositorSupport.h b/sky/engine/public/platform/WebCompositorSupport.h
index 735f7804c86a6f581234087fe938c280acd29984..aaa498a08108dc8fa6c3a2f552cca760a450c51f 100644
--- a/sky/engine/public/platform/WebCompositorSupport.h
+++ b/sky/engine/public/platform/WebCompositorSupport.h
@@ -31,8 +31,6 @@
 #include "WebCompositorAnimationCurve.h"
 #include "WebFloatPoint.h"
 #include "WebLayerTreeView.h"
-#include "WebScrollbar.h"
-#include "WebScrollbarThemePainter.h"
 
 namespace blink {
 
@@ -48,9 +46,6 @@ class WebFloatAnimationCurve;
 class WebGraphicsContext3D;
 class WebImageLayer;
 class WebLayer;
-class WebScrollbarLayer;
-class WebScrollbarThemeGeometry;
-class WebScrollOffsetAnimationCurve;
 class WebTransformAnimationCurve;
 class WebTransformOperations;
 
@@ -80,8 +75,6 @@ public:
 
     virtual WebFloatAnimationCurve* createFloatAnimationCurve() { return 0; }
 
-    virtual WebScrollOffsetAnimationCurve* createScrollOffsetAnimationCurve(WebFloatPoint targetValue, WebCompositorAnimationCurve::TimingFunctionType) { return 0; }
-
     virtual WebTransformAnimationCurve* createTransformAnimationCurve() { return 0; }
 
     virtual WebTransformOperations* createTransformOperations() { return 0; }