Remove WebScroll*

sky/engine/platform/scroll/ProgrammaticScrollAnimator.h

-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef ProgrammaticScrollAnimator_h
-#define ProgrammaticScrollAnimator_h
-
-#include "platform/geometry/FloatPoint.h"
-#include "wtf/FastAllocBase.h"
-#include "wtf/Noncopyable.h"
-#include "wtf/OwnPtr.h"
-#include "wtf/PassOwnPtr.h"
-
-namespace blink {
-
-class ScrollableArea;
-class WebScrollOffsetAnimationCurve;
-
-// Animator for fixed-destination scrolls, such as those triggered by
-// CSSOM View scroll APIs.
-class ProgrammaticScrollAnimator {
-    WTF_MAKE_NONCOPYABLE(ProgrammaticScrollAnimator);
-    WTF_MAKE_FAST_ALLOCATED;
-public:
-    static PassOwnPtr<ProgrammaticScrollAnimator> create(ScrollableArea*);
-
-    ~ProgrammaticScrollAnimator();
-
-    void animateToOffset(FloatPoint);
-    void cancelAnimation();
-    void tickAnimation(double monotonicTime);
-
-private:
-    explicit ProgrammaticScrollAnimator(ScrollableArea*);
-
-    void resetAnimationState();
-
-    ScrollableArea* m_scrollableArea;
-    OwnPtr<WebScrollOffsetAnimationCurve> m_animationCurve;
-    FloatPoint m_targetOffset;
-    double m_startTime;
-};
-
-} // namespace blink
-
-#endif // ProgrammaticScrollAnimator_h