Oilpan: Prepare to move RenderObject and RenderObjectChildList to Oilpan heap.

Source/core/rendering/RenderLayer.cpp

Index: Source/core/rendering/RenderLayer.cpp
diff --git a/Source/core/rendering/RenderLayer.cpp b/Source/core/rendering/RenderLayer.cpp
index 960e3e7a33fd6493e2412e4baff2a579a26ec7c1..d4066edfdcf817e8624714fbcad507197e657139 100644
--- a/Source/core/rendering/RenderLayer.cpp
+++ b/Source/core/rendering/RenderLayer.cpp
@@ -172,6 +172,9 @@ RenderLayer::~RenderLayer()
     // we don't need to delete them ourselves.
 
     clearCompositedLayerMapping(true);
+
+    if (m_reflectionInfo)
+        m_reflectionInfo->destroy();
 }
 
 String RenderLayer::debugName() const
@@ -1518,9 +1521,10 @@ void RenderLayer::updateReflectionInfo(const RenderStyle* oldStyle)
     ASSERT(!oldStyle || !renderer()->style()->reflectionDataEquivalent(oldStyle));
     if (renderer()->hasReflection()) {
         if (!m_reflectionInfo)
-            m_reflectionInfo = adoptPtr(new RenderLayerReflectionInfo(*renderBox()));
+            m_reflectionInfo = adoptPtrWillBeNoop(new RenderLayerReflectionInfo(*renderBox()));
         m_reflectionInfo->updateAfterStyleChange(oldStyle);
     } else if (m_reflectionInfo) {
+        m_reflectionInfo->destroy();
         m_reflectionInfo = nullptr;
     }
 }