remove memoryinstrumentation

Source/core/css/CSSCharsetRule.cpp

Index: Source/core/css/CSSCharsetRule.cpp
diff --git a/Source/core/css/CSSCharsetRule.cpp b/Source/core/css/CSSCharsetRule.cpp
index 7df8ccab602469c93b242526d10ce6a0299e7170..7bb2a41700ba3b73044f4e625e6f89daf289b1a5 100644
--- a/Source/core/css/CSSCharsetRule.cpp
+++ b/Source/core/css/CSSCharsetRule.cpp
@@ -21,8 +21,6 @@
 #include "config.h"
 #include "CSSCharsetRule.h"
 
-#include "WebCoreMemoryInstrumentation.h"
-
 namespace WebCore {
 
 CSSCharsetRule::CSSCharsetRule(CSSStyleSheet* parent, const String& encoding)
@@ -36,11 +34,4 @@ String CSSCharsetRule::cssText() const
     return "@charset \"" + m_encoding + "\";";
 }
 
-void CSSCharsetRule::reportMemoryUsage(MemoryObjectInfo* memoryObjectInfo) const
-{
-    MemoryClassInfo info(memoryObjectInfo, this, WebCoreMemoryTypes::CSS);
-    CSSRule::reportMemoryUsage(memoryObjectInfo);
-    info.addMember(m_encoding, "encoding");
-}
-
 } // namespace WebCore