remove memoryinstrumentation

Source/core/dom/ShadowRoot.cpp

Index: Source/core/dom/ShadowRoot.cpp
diff --git a/Source/core/dom/ShadowRoot.cpp b/Source/core/dom/ShadowRoot.cpp
index f3052f2573d230a5904bd9c67ef16334cfc2b583..444ba192a2863d0dc29635b5038272328815ef17 100644
--- a/Source/core/dom/ShadowRoot.cpp
+++ b/Source/core/dom/ShadowRoot.cpp
@@ -253,14 +253,4 @@ ScopeContentDistribution* ShadowRoot::ensureScopeDistribution()
     return m_scopeDistribution.get();
 }   
 
-void ShadowRoot::reportMemoryUsage(MemoryObjectInfo* memoryObjectInfo) const
-{
-    MemoryClassInfo info(memoryObjectInfo, this, WebCoreMemoryTypes::DOM);
-    DocumentFragment::reportMemoryUsage(memoryObjectInfo);
-    TreeScope::reportMemoryUsage(memoryObjectInfo);
-    info.addMember(m_prev, "prev");
-    info.addMember(m_next, "next");
-    info.addMember(m_scopeDistribution, "scopeDistribution");
-}
-
 }