sky-scrollable should use a reasonable fling curve

sky/engine/core/frame/LocalDOMWindow.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  *
  * 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
@@ skipping 611 matching lines @@
         return;
 
     FloatRect fr = host->chrome().windowRect();
     FloatSize dest = FloatSize(width, height);
     FloatRect update(fr.location(), dest);
     host->chrome().setWindowRect(adjustWindowRect(*m_frame, update));
 }
 
 int LocalDOMWindow::requestAnimationFrame(PassOwnPtr<RequestAnimationFrameCallback> callback)
 {
-    callback->m_useLegacyTimeBase = false;
     if (Document* d = document())
         return d->requestAnimationFrame(callback);
     return 0;
 }
 
 void LocalDOMWindow::cancelAnimationFrame(int id)
 {
     if (Document* d = document())
         d->cancelAnimationFrame(id);
 }
@@ skipping 99 matching lines @@
 {
     return static_cast<DOMWindowLifecycleNotifier&>(LifecycleContext<LocalDOMWindow>::lifecycleNotifier());
 }
 
 PassOwnPtr<LifecycleNotifier<LocalDOMWindow> > LocalDOMWindow::createLifecycleNotifier()
 {
     return DOMWindowLifecycleNotifier::create(this);
 }
 
 } // namespace blink