Reland Fix leak PaintLayerReflectionInfo

third_party/WebKit/Source/core/paint/PaintLayer.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 186 matching lines @@
     if (groupedMapping()) {
         DisableCompositingQueryAsserts disabler;
         setGroupedMapping(0, InvalidateLayerAndRemoveFromMapping);
     }
 
     // Child layers will be deleted by their corresponding layout objects, so
     // we don't need to delete them ourselves.
 
     clearCompositedLayerMapping(true);
 
-    if (PaintLayerReflectionInfo* reflectionInfo = this->reflectionInfo())
-        reflectionInfo->destroy();
-
     if (m_scrollableArea)
         m_scrollableArea->dispose();
 }
 
 String PaintLayer::debugName() const
 {
     if (isReflection())
         return layoutObject()->parent()->debugName() + " (reflection)";
     return layoutObject()->debugName();
 }
@@ skipping 1199 matching lines @@
         LayoutBlockFlow::setAncestorShouldPaintFloatingObject(*layoutBox(), wasSelfPaintingLayer);
 }
 
 void PaintLayer::updateReflectionInfo(const ComputedStyle* oldStyle)
 {
     ASSERT(!oldStyle || !layoutObject()->style()->reflectionDataEquivalent(oldStyle));
     if (layoutObject()->hasReflection()) {
         ensureRareData().reflectionInfo = adoptPtr(new PaintLayerReflectionInfo(*layoutBox()));
         m_rareData->reflectionInfo->updateAfterStyleChange(oldStyle);
     } else if (m_rareData && m_rareData->reflectionInfo) {
-        m_rareData->reflectionInfo->destroy();
         m_rareData->reflectionInfo = nullptr;
     }
 }
 
 void PaintLayer::updateStackingNode()
 {
     ASSERT(!m_stackingNode);
     if (requiresStackingNode())
         m_stackingNode = adoptPtr(new PaintLayerStackingNode(this));
     else
@@ skipping 1361 matching lines @@
 
 void showLayerTree(const blink::LayoutObject* layoutObject)
 {
     if (!layoutObject) {
         fprintf(stderr, "Cannot showLayerTree. Root is (nil)\n");
         return;
     }
     showLayerTree(layoutObject->enclosingLayer());
 }
 #endif