remove memoryinstrumentation

Source/core/loader/Prerenderer.cpp

Index: Source/core/loader/Prerenderer.cpp
diff --git a/Source/core/loader/Prerenderer.cpp b/Source/core/loader/Prerenderer.cpp
index 95860b083b4bcf10c47310cf6e9c08f4bf65a3d3..2228e7f137e6cccfcff5ab0e587c5d6e0bcc19e4 100644
--- a/Source/core/loader/Prerenderer.cpp
+++ b/Source/core/loader/Prerenderer.cpp
@@ -39,9 +39,7 @@
 #include "PrerendererClient.h"
 #include "ReferrerPolicy.h"
 #include "SecurityPolicy.h"
-#include "WebCoreMemoryInstrumentation.h"
 
-#include <wtf/MemoryInstrumentationVector.h>
 #include <wtf/PassOwnPtr.h>
 #include <wtf/PassRefPtr.h>
 #include <wtf/RefPtr.h>
@@ -142,13 +140,4 @@ PrerendererClient* Prerenderer::client()
     return m_client;
 }
 
-void Prerenderer::reportMemoryUsage(MemoryObjectInfo* memoryObjectInfo) const
-{
-    MemoryClassInfo info(memoryObjectInfo, this, WebCoreMemoryTypes::DOM);
-    ActiveDOMObject::reportMemoryUsage(memoryObjectInfo);
-    info.ignoreMember(m_client);
-    info.addMember(m_activeHandles, "activeHandles");
-    info.addMember(m_suspendedHandles, "suspendedHandles");
-}
-
 }