Remove current implementation of frame timing events.

third_party/WebKit/Source/core/paint/PaintLayerScrollableArea.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  *
  * Portions are Copyright (C) 1998 Netscape Communications Corporation.
  *
  * Other contributors:
  *   Robert O'Callahan <roc+@cs.cmu.edu>
  *   David Baron <dbaron@fas.harvard.edu>
  *   Christian Biesinger <cbiesinger@gmail.com>
  *   Randall Jesup <rjesup@wgate.com>
@@ skipping 376 matching lines @@
     // Only the root layer can overlap non-composited fixed-position elements.
     if (!requiresPaintInvalidation && layer()->isRootLayer() && frameView->hasViewportConstrainedObjects()) {
         if (!frameView->invalidateViewportConstrainedObjects())
             requiresPaintInvalidation = true;
     }
 
     // Just schedule a full paint invalidation of our object.
     // FIXME: This invalidation will be unnecessary in slimming paint phase 2.
     if (requiresPaintInvalidation) {
         box().setShouldDoFullPaintInvalidationIncludingNonCompositingDescendants();
-        frameView->setFrameTimingRequestsDirty(true);
     }
 
     // Schedule the scroll DOM event.
     if (box().node())
         box().node()->document().enqueueScrollEventForNode(box().node());
 
     if (AXObjectCache* cache = box().document().existingAXObjectCache())
         cache->handleScrollPositionChanged(&box());
     box().view()->clearHitTestCache();
 
@@ skipping 1198 matching lines @@
 }
 
 DEFINE_TRACE(PaintLayerScrollableArea::ScrollbarManager)
 {
     visitor->trace(m_scrollableArea);
     visitor->trace(m_hBar);
     visitor->trace(m_vBar);
 }
 
 } // namespace blink