Switch AutoscrollController to use animation system instead of timer

Source/core/page/Page.h

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 121 matching lines @@
         if (!m_group)
             setGroupType(PrivatePageGroup);
         return *m_group;
     }
 
     void incrementSubframeCount() { ++m_subframeCount; }
     void decrementSubframeCount() { ASSERT(m_subframeCount); --m_subframeCount; }
     int subframeCount() const { checkSubframeCountConsistency(); return m_subframeCount; }
 
     Chrome& chrome() const { return *m_chrome; }
+    AutoscrollController& autoscrollController() const { return *m_autoscrollController; }
     DragCaretController& dragCaretController() const { return *m_dragCaretController; }
     DragController& dragController() const { return *m_dragController; }
     FocusController& focusController() const { return *m_focusController; }
     ContextMenuController& contextMenuController() const { return *m_contextMenuController; }
     InspectorController& inspectorController() const { return *m_inspectorController; }
     PointerLockController& pointerLockController() const { return *m_pointerLockController; }
     ValidationMessageClient* validationMessageClient() const { return m_validationMessageClient; }
     void setValidationMessageClient(ValidationMessageClient* client) { m_validationMessageClient = client; }
     SharedWorkerRepositoryClient* sharedWorkerRepositoryClient() { return m_sharedWorkerRepositoryClient; }
     void setSharedWorkerRepositoryClient(SharedWorkerRepositoryClient* client) { m_sharedWorkerRepositoryClient = client; }
 
-    bool autoscrollInProgress() const;
-    bool autoscrollInProgress(const RenderBox*) const;
-    bool panScrollInProgress() const;
-    void startAutoscrollForSelection(RenderObject*);
-    void stopAutoscrollIfNeeded(RenderObject*);
-    void stopAutoscrollTimer();
-    void updateAutoscrollRenderer();
-    void updateDragAndDrop(Node* targetNode, const IntPoint& eventPosition, double eventTime);
-#if OS(WIN)
-    void handleMouseReleaseForPanScrolling(Frame*, const PlatformMouseEvent&);
-    void startPanScrolling(RenderBox*, const IntPoint&);
-#endif
-
     ScrollingCoordinator* scrollingCoordinator();
 
     String mainThreadScrollingReasonsAsText();
     PassRefPtr<ClientRectList> nonFastScrollableRects(const Frame*);
 
     Settings& settings() const { return *m_settings; }
     ProgressTracker& progress() const { return *m_progress; }
     BackForwardClient& backForward() const { return *m_backForwardClient; }
 
     UseCounter& useCounter() { return m_useCounter; }
@@ skipping 131 matching lines @@
 #endif
 
     const OwnPtr<PageConsole> m_console;
 
     HashSet<MultisamplingChangedObserver*> m_multisamplingChangedObservers;
 };
 
 } // namespace WebCore
 
 #endif // Page_h