Statistics of LayoutBox rare data reasons

third_party/WebKit/Source/core/layout/compositing/CompositedLayerMapping.cpp

 /*
  * Copyright (C) 2009, 2010, 2011 Apple Inc. All rights reserved.
  *
  * 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 3438 matching lines @@
 
     m_squashedLayers.remove(nextSquashedLayerIndex,
                             m_squashedLayers.size() - nextSquashedLayerIndex);
   }
 }
 
 String CompositedLayerMapping::debugName(
     const GraphicsLayer* graphicsLayer) const {
   String name;
   if (graphicsLayer == m_graphicsLayer.get()) {
-    name = m_owningLayer.debugName();
+    name = "Main Layer " + m_owningLayer.debugName();
   } else if (graphicsLayer == m_squashingContainmentLayer.get()) {
-    name = "Squashing Containment Layer";
+    name = "Squashing Containment Layer " + m_owningLayer.debugName();
   } else if (graphicsLayer == m_squashingLayer.get()) {
     name = "Squashing Layer (first squashed layer: " +
            (m_squashedLayers.size() > 0
                 ? m_squashedLayers[0].paintLayer->debugName()
                 : "") +
-           ")";
+           ") " + m_owningLayer.debugName();
   } else if (graphicsLayer == m_ancestorClippingLayer.get()) {
     name = "Ancestor Clipping Layer";
   } else if (graphicsLayer == m_ancestorClippingMaskLayer.get()) {
     name = "Ancestor Clipping Mask Layer";
   } else if (graphicsLayer == m_foregroundLayer.get()) {
     name = m_owningLayer.debugName() + " (foreground) Layer";
   } else if (graphicsLayer == m_backgroundLayer.get()) {
     name = m_owningLayer.debugName() + " (background) Layer";
   } else if (graphicsLayer == m_childContainmentLayer.get()) {
-    name = "Child Containment Layer";
+    name = "Child Containment Layer " + m_owningLayer.debugName();
   } else if (graphicsLayer == m_childTransformLayer.get()) {
-    name = "Child Transform Layer";
+    name = "Child Transform Layer " + m_owningLayer.debugName();
   } else if (graphicsLayer == m_maskLayer.get()) {
-    name = "Mask Layer";
+    name = "Mask Layer " + m_owningLayer.debugName();
   } else if (graphicsLayer == m_childClippingMaskLayer.get()) {
-    name = "Child Clipping Mask Layer";
+    name = "Child Clipping Mask Layer " + m_owningLayer.debugName();
   } else if (graphicsLayer == m_layerForHorizontalScrollbar.get()) {
-    name = "Horizontal Scrollbar Layer";
+    name = "Horizontal Scrollbar Layer " + m_owningLayer.debugName();
   } else if (graphicsLayer == m_layerForVerticalScrollbar.get()) {
-    name = "Vertical Scrollbar Layer";
+    name = "Vertical Scrollbar Layer " + m_owningLayer.debugName();
   } else if (graphicsLayer == m_layerForScrollCorner.get()) {
-    name = "Scroll Corner Layer";
+    name = "Scroll Corner Layer " + m_owningLayer.debugName();
   } else if (graphicsLayer == m_overflowControlsHostLayer.get()) {
-    name = "Overflow Controls Host Layer";
+    name = "Overflow Controls Host Layer " + m_owningLayer.debugName();
   } else if (graphicsLayer == m_overflowControlsAncestorClippingLayer.get()) {
-    name = "Overflow Controls Ancestor Clipping Layer";
+    name = "Overflow Controls Ancestor Clipping Layer " +
+           m_owningLayer.debugName();
   } else if (graphicsLayer == m_scrollingLayer.get()) {
-    name = "Scrolling Layer";
+    name = "Scrolling Layer " + m_owningLayer.debugName();
   } else if (graphicsLayer == m_scrollingContentsLayer.get()) {
     name = "Scrolling Contents Layer";
   } else if (graphicsLayer == m_decorationOutlineLayer.get()) {
     name = "Decoration Layer";
   } else {
     ASSERT_NOT_REACHED();
   }
 
   return name;
 }
 
 }  // namespace blink