Begin tracking why layout is invalidated

Source/core/layout/svg/LayoutSVGResourceContainer.cpp

 /*
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  *
  * 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,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 177 matching lines @@
 {
     ASSERT(client);
     m_clientLayers.remove(client);
 }
 
 void LayoutSVGResourceContainer::invalidateCacheAndMarkForLayout(SubtreeLayoutScope* layoutScope)
 {
     if (selfNeedsLayout())
         return;
 
-    setNeedsLayoutAndFullPaintInvalidation(MarkContainerChain, layoutScope);
+    setNeedsLayoutAndFullPaintInvalidation(LayoutInvalidationReason::SvgResourceInvalidated, MarkContainerChain, layoutScope);
 
     if (everHadLayout())
         removeAllClientsFromCache();
 }
 
 void LayoutSVGResourceContainer::registerResource()
 {
     SVGDocumentExtensions& extensions = svgExtensionsFromElement(element());
     if (!extensions.hasPendingResource(m_id)) {
         extensions.addResource(m_id, this);
@@ skipping 10 matching lines @@
     for (SVGDocumentExtensions::SVGPendingElements::const_iterator it = clients->begin(); it != end; ++it) {
         ASSERT((*it)->hasPendingResources());
         extensions.clearHasPendingResourcesIfPossible(*it);
         LayoutObject* layoutObject = (*it)->layoutObject();
         if (!layoutObject)
             continue;
 
         StyleDifference diff;
         diff.setNeedsFullLayout();
         SVGResourcesCache::clientStyleChanged(layoutObject, diff, layoutObject->styleRef());
-        layoutObject->setNeedsLayoutAndFullPaintInvalidation();
+        layoutObject->setNeedsLayoutAndFullPaintInvalidation(LayoutInvalidationReason::SvgResourceInvalidated);
     }
 }
 
 static inline void removeFromCacheAndInvalidateDependencies(LayoutObject* object, bool needsLayout)
 {
     ASSERT(object);
     if (SVGResources* resources = SVGResourcesCache::cachedResourcesForLayoutObject(object)) {
         if (LayoutSVGResourceFilter* filter = resources->filter())
             filter->removeClientFromCache(object);
 
@@ skipping 30 matching lines @@
         }
     }
 }
 
 void LayoutSVGResourceContainer::markForLayoutAndParentResourceInvalidation(LayoutObject* object, bool needsLayout)
 {
     ASSERT(object);
     ASSERT(object->node());
 
     if (needsLayout && !object->documentBeingDestroyed())
-        object->setNeedsLayoutAndFullPaintInvalidation();
+        object->setNeedsLayoutAndFullPaintInvalidation(LayoutInvalidationReason::SvgResourceInvalidated);
 
     removeFromCacheAndInvalidateDependencies(object, needsLayout);
 
     // Invalidate resources in ancestor chain, if needed.
     LayoutObject* current = object->parent();
     while (current) {
         removeFromCacheAndInvalidateDependencies(current, needsLayout);
 
         if (current->isSVGResourceContainer()) {
             // This will process the rest of the ancestors.
             toLayoutSVGResourceContainer(current)->removeAllClientsFromCache();
             break;
         }
 
         current = current->parent();
     }
 }
 
 }