remove memoryinstrumentation

Source/core/css/CSSImportRule.cpp

Index: Source/core/css/CSSImportRule.cpp
diff --git a/Source/core/css/CSSImportRule.cpp b/Source/core/css/CSSImportRule.cpp
index ca8a7dd8a4bfd958cb2dcd8a76d7b554d26266d4..25d9e3465d61dbbb5a68c1578dbce8f904bd92ce 100644
--- a/Source/core/css/CSSImportRule.cpp
+++ b/Source/core/css/CSSImportRule.cpp
@@ -30,7 +30,6 @@
 #include "SecurityOrigin.h"
 #include "StyleRuleImport.h"
 #include "StyleSheetContents.h"
-#include "WebCoreMemoryInstrumentation.h"
 #include <wtf/text/StringBuilder.h>
 
 namespace WebCore {
@@ -80,15 +79,6 @@ String CSSImportRule::cssText() const
     return result.toString();
 }
 
-void CSSImportRule::reportMemoryUsage(MemoryObjectInfo* memoryObjectInfo) const
-{
-    MemoryClassInfo info(memoryObjectInfo, this, WebCoreMemoryTypes::CSS);
-    CSSRule::reportMemoryUsage(memoryObjectInfo);
-    info.addMember(m_importRule, "importRule");
-    info.addMember(m_mediaCSSOMWrapper, "mediaCSSOMWrapper");
-    info.addMember(m_styleSheetCSSOMWrapper, "styleSheetCSSOMWrapper");
-}
-
 CSSStyleSheet* CSSImportRule::styleSheet() const
 { 
     if (!m_importRule->styleSheet())