Issue trace events to gather repaint information.

Source/core/rendering/RenderLayerRepainter.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@web.de>
  *   Randall Jesup <rjesup@wgate.com>
@@ skipping 64 matching lines @@
         ASSERT(!view->layoutStateEnabled());
 
         RenderLayerModelObject* repaintContainer = m_renderer->containerForRepaint();
         LayoutRect oldRepaintRect = m_repaintRect;
         computeRepaintRects(repaintContainer, geometryMap);
         shouldCheckForRepaint &= shouldRepaintLayer();
 
         if (shouldCheckForRepaint) {
             if (view && !view->document().printing()) {
                 if (m_repaintStatus & NeedsFullRepaint) {
-                    m_renderer->repaintUsingContainer(repaintContainer, pixelSnappedIntRect(oldRepaintRect));
+                    m_renderer->repaintUsingContainer(repaintContainer, pixelSnappedIntRect(oldRepaintRect), InvalidationLayer);
                     if (m_repaintRect != oldRepaintRect)
-                        m_renderer->repaintUsingContainer(repaintContainer, pixelSnappedIntRect(m_repaintRect));
+                        m_renderer->repaintUsingContainer(repaintContainer, pixelSnappedIntRect(m_repaintRect), InvalidationLayer);
                 } else {
                     m_renderer->repaintAfterLayoutIfNeeded(repaintContainer, m_renderer->selfNeedsLayout(), oldRepaintRect, &m_repaintRect);
                 }
             }
         }
     } else {
         clearRepaintRects();
     }
 
     m_repaintStatus = NeedsNormalRepaint;
@@ skipping 46 matching lines @@
         return true;
 
     // Composited layers that were moved during a positioned movement only
     // layout, don't need to be repainted. They just need to be recomposited.
     return m_renderer->compositingState() != PaintsIntoOwnBacking;
 }
 
 // Since we're only painting non-composited layers, we know that they all share the same repaintContainer.
 void RenderLayerRepainter::repaintIncludingNonCompositingDescendants(RenderLayerModelObject* repaintContainer)
 {
-    m_renderer->repaintUsingContainer(repaintContainer, pixelSnappedIntRect(m_renderer->clippedOverflowRectForRepaint(repaintContainer)));
+    m_renderer->repaintUsingContainer(repaintContainer, pixelSnappedIntRect(m_renderer->clippedOverflowRectForRepaint(repaintContainer)), InvalidationLayer);
 
     for (RenderLayer* curr = m_renderer->layer()->firstChild(); curr; curr = curr->nextSibling()) {
         if (!curr->hasCompositedLayerMapping())
             curr->repainter().repaintIncludingNonCompositingDescendants(repaintContainer);
     }
 }
 
 LayoutRect RenderLayerRepainter::repaintRectIncludingNonCompositingDescendants() const
 {
     LayoutRect repaintRect;
@@ skipping 110 matching lines @@
 RenderLayer* RenderLayerRepainter::enclosingFilterRepaintLayer() const
 {
     for (const RenderLayer* curr = m_renderer->layer(); curr; curr = curr->parent()) {
         if ((curr != m_renderer->layer() && curr->requiresFullLayerImageForFilters()) || curr->compositingState() == PaintsIntoOwnBacking || curr->isRootLayer())
             return const_cast<RenderLayer*>(curr);
     }
     return 0;
 }
 
 } // Namespace WebCore