Oilpan: move RenderObjects off heap.

Source/core/rendering/RenderLayerReflectionInfo.cpp

Index: Source/core/rendering/RenderLayerReflectionInfo.cpp
diff --git a/Source/core/rendering/RenderLayerReflectionInfo.cpp b/Source/core/rendering/RenderLayerReflectionInfo.cpp
index f154ecdb4413c12e8acab3720cc285972cd547cf..483766273f299d5eca85aee7a81a66b3bdc5f4ec 100644
--- a/Source/core/rendering/RenderLayerReflectionInfo.cpp
+++ b/Source/core/rendering/RenderLayerReflectionInfo.cpp
@@ -57,7 +57,7 @@
 namespace blink {
 
 RenderLayerReflectionInfo::RenderLayerReflectionInfo(RenderBox& renderer)
-    : m_box(renderer)
+    : m_box(&renderer)
     , m_isPaintingInsideReflection(false)
 {
     UseCounter::count(box().document(), UseCounter::Reflection);
@@ -76,12 +76,6 @@ void RenderLayerReflectionInfo::destroy()
     m_reflection = nullptr;
 }
 
-void RenderLayerReflectionInfo::trace(Visitor* visitor)
-{
-    visitor->trace(m_box);
-    visitor->trace(m_reflection);
-}
-
 RenderLayer* RenderLayerReflectionInfo::reflectionLayer() const
 {
     return m_reflection->layer();