Get rid of slow repaint objects and main thread scrolling reasons.

sky/engine/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 101 matching lines @@
     void setOpenedByDOM();
 
     PageAnimator& animator() { return m_animator; }
     Chrome& chrome() const { return *m_chrome; }
     AutoscrollController& autoscrollController() const { return *m_autoscrollController; }
     DragCaretController& dragCaretController() const { return *m_dragCaretController; }
     FocusController& focusController() const { return *m_focusController; }
 
     ScrollingCoordinator* scrollingCoordinator();
 
-    String mainThreadScrollingReasonsAsText();
     PassRefPtr<ClientRectList> nonFastScrollableRects(const LocalFrame*);
 
     Settings& settings() const { return *m_settings; }
 
     UseCounter& useCounter() { return m_useCounter; }
 
     void setTabKeyCyclesThroughElements(bool b) { m_tabKeyCyclesThroughElements = b; }
     bool tabKeyCyclesThroughElements() const { return m_tabKeyCyclesThroughElements; }
 
     void unmarkAllTextMatches();
@@ skipping 90 matching lines @@
     HashSet<RawPtr<MultisamplingChangedObserver> > m_multisamplingChangedObservers;
 
     // A pointer to all the interfaces provided to in-process Frames for this Page.
     // FIXME: Most of the members of Page should move onto FrameHost.
     OwnPtr<FrameHost> m_frameHost;
 };
 
 } // namespace blink
 
 #endif // Page_h