Switch AutoscrollController to use animation system instead of timer

Source/core/page/EventHandler.h

 /*
  * Copyright (C) 2006, 2007, 2009, 2010, 2011 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 25 matching lines @@
 #include "platform/Timer.h"
 #include "platform/UserGestureIndicator.h"
 #include "platform/geometry/LayoutPoint.h"
 #include "platform/scroll/ScrollTypes.h"
 #include "wtf/Forward.h"
 #include "wtf/HashMap.h"
 #include "wtf/RefPtr.h"
 
 namespace WebCore {
 
+class AutoscrollController;
 class Clipboard;
 class Document;
 class Element;
 class Event;
 class EventTarget;
 class FloatPoint;
 class FloatQuad;
 class FullscreenElementStack;
 class Frame;
 class HTMLFrameSetElement;
@@ skipping 35 matching lines @@
     void nodeWillBeRemoved(Node*);
 
     void updateSelectionForMouseDrag();
 
     Node* mousePressNode() const;
 
 #if OS(WIN)
     void startPanScrolling(RenderObject*);
 #endif
 
-    void stopAutoscrollTimer();
+    void stopAutoscroll();
 
     void dispatchFakeMouseMoveEventSoon();
     void dispatchFakeMouseMoveEventSoonInQuad(const FloatQuad&);
 
     HitTestResult hitTestResultAtPoint(const LayoutPoint&,
         HitTestRequest::HitTestRequestType hitType = HitTestRequest::ReadOnly | HitTestRequest::Active,
         const LayoutSize& padding = LayoutSize());
 
     bool mousePressed() const { return m_mousePressed; }
     void setMousePressed(bool pressed) { m_mousePressed = pressed; }
@@ skipping 169 matching lines @@
 
     bool handleGestureShowPress();
 
     bool handleScrollGestureOnResizer(Node*, const PlatformGestureEvent&);
 
     bool passGestureEventToWidget(const PlatformGestureEvent&, Widget*);
     bool passGestureEventToWidgetIfPossible(const PlatformGestureEvent&, RenderObject*);
     bool sendScrollEventToView(const PlatformGestureEvent&, const FloatSize&);
     Frame* getSubFrameForGestureEvent(const IntPoint& touchAdjustedPoint, const PlatformGestureEvent&);
 
+    AutoscrollController* autoscrollController() const;
     bool panScrollInProgress() const;
     void setLastKnownMousePosition(const PlatformMouseEvent&);
 
     Frame* const m_frame;
 
     bool m_mousePressed;
     bool m_capturesDragging;
     RefPtr<Node> m_mousePressNode;
 
     bool m_mouseDownMayStartSelect;
@@ skipping 67 matching lines @@
     double m_maxMouseMovedDuration;
     PlatformEvent::Type m_baseEventType;
     bool m_didStartDrag;
 
     bool m_longTapShouldInvokeContextMenu;
 };
 
 } // namespace WebCore
 
 #endif // EventHandler_h