Switch AutoscrollController to use animation system instead of timer

Source/core/loader/FrameLoader.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2008 Alp Toker <alp@atoker.com>
  * Copyright (C) Research In Motion Limited 2009. All rights reserved.
  * Copyright (C) 2011 Kris Jordan <krisjordan@gmail.com>
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ skipping 560 matching lines @@
 
 void FrameLoader::loadInSameDocument(const KURL& url, PassRefPtr<SerializedScriptValue> stateObject, bool isNewNavigation)
 {
     // If we have a state object, we cannot also be a new navigation.
     ASSERT(!stateObject || (stateObject && !isNewNavigation));
 
     KURL oldURL = m_frame->document()->url();
     // If we were in the autoscroll/panScroll mode we want to stop it before following the link to the anchor
     bool hashChange = equalIgnoringFragmentIdentifier(url, oldURL) && url.fragmentIdentifier() != oldURL.fragmentIdentifier();
     if (hashChange) {
-        m_frame->eventHandler().stopAutoscrollTimer();
+        m_frame->eventHandler().stopAutoscroll();
         m_frame->domWindow()->enqueueHashchangeEvent(oldURL, url);
     }
     m_documentLoader->setIsClientRedirect((m_startingClientRedirect && !isNewNavigation) || !UserGestureIndicator::processingUserGesture());
     m_documentLoader->setReplacesCurrentHistoryItem(!isNewNavigation);
     UpdateBackForwardListPolicy updateBackForwardList = isNewNavigation && !shouldTreatURLAsSameAsCurrent(url) && !stateObject ? UpdateBackForwardList : DoNotUpdateBackForwardList;
     updateForSameDocumentNavigation(url, SameDocumentNavigationDefault, 0, updateBackForwardList);
 
     // It's important to model this as a load that starts and immediately finishes.
     // Otherwise, the parent frame may think we never finished loading.
     started();
@@ skipping 1009 matching lines @@
 {
     SandboxFlags flags = m_forcedSandboxFlags;
     if (Frame* parentFrame = m_frame->tree().parent())
         flags |= parentFrame->document()->sandboxFlags();
     if (HTMLFrameOwnerElement* ownerElement = m_frame->ownerElement())
         flags |= ownerElement->sandboxFlags();
     return flags;
 }
 
 } // namespace WebCore