Switch AutoscrollController to use animation system instead of timer

Source/core/rendering/RenderObject.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  *           (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Google Inc. All rights reserved.
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 21 matching lines @@
 #include "core/accessibility/AXObjectCache.h"
 #include "core/animation/ActiveAnimations.h"
 #include "core/css/resolver/StyleResolver.h"
 #include "core/editing/EditingBoundary.h"
 #include "core/editing/FrameSelection.h"
 #include "core/editing/htmlediting.h"
 #include "core/html/HTMLAnchorElement.h"
 #include "core/html/HTMLElement.h"
 #include "core/html/HTMLHtmlElement.h"
 #include "core/html/HTMLTableElement.h"
+#include "core/page/AutoscrollController.h"
 #include "core/page/EventHandler.h"
 #include "core/frame/Frame.h"
 #include "core/frame/FrameView.h"
 #include "core/page/Page.h"
 #include "core/page/Settings.h"
 #include "core/page/UseCounter.h"
 #include "core/frame/animation/AnimationController.h"
 #include "core/platform/graphics/GraphicsContext.h"
 #include "core/rendering/CompositedLayerMapping.h"
 #include "core/rendering/FlowThreadController.h"
@@ skipping 2499 matching lines @@
     }
 }
 
 void RenderObject::willBeDestroyed()
 {
     // Destroy any leftover anonymous children.
     RenderObjectChildList* children = virtualChildren();
     if (children)
         children->destroyLeftoverChildren();
 
-    // If this renderer is being autoscrolled, stop the autoscroll timer
+    // If this renderer is being autoscrolled, stop the autoscrolling.
     if (Frame* frame = this->frame()) {
         if (frame->page())
-            frame->page()->stopAutoscrollIfNeeded(this);
+            frame->page()->autoscrollController().stopAutoscrollIfNeeded(this);
         frame->animation().cancelAnimations(this);
     }
 
     // For accessibility management, notify the parent of the imminent change to its child set.
     // We do it now, before remove(), while the parent pointer is still available.
     if (AXObjectCache* cache = document().existingAXObjectCache())
         cache->childrenChanged(this->parent());
 
     remove();
 
@@ skipping 818 matching lines @@
 {
     if (object1) {
         const WebCore::RenderObject* root = object1;
         while (root->parent())
             root = root->parent();
         root->showRenderTreeAndMark(object1, "*", object2, "-", 0);
     }
 }
 
 #endif