remove memoryinstrumentation

Source/core/html/HTMLCanvasElement.cpp

Index: Source/core/html/HTMLCanvasElement.cpp
diff --git a/Source/core/html/HTMLCanvasElement.cpp b/Source/core/html/HTMLCanvasElement.cpp
index fe686a665a5de2a54f7b1330c2dae0e2bceecbc2..523cad03b669dc68542c0b153876728e09e4363c 100644
--- a/Source/core/html/HTMLCanvasElement.cpp
+++ b/Source/core/html/HTMLCanvasElement.cpp
@@ -47,7 +47,6 @@
 #include "RenderHTMLCanvas.h"
 #include "ScriptController.h"
 #include "Settings.h"
-#include "WebCoreMemoryInstrumentation.h"
 #include <math.h>
 #include <stdio.h>
 
@@ -583,16 +582,4 @@ AffineTransform HTMLCanvasElement::baseTransform() const
     return m_imageBuffer->baseTransform() * transform;
 }
 
-void HTMLCanvasElement::reportMemoryUsage(MemoryObjectInfo* memoryObjectInfo) const
-{
-    MemoryClassInfo info(memoryObjectInfo, this, WebCoreMemoryTypes::DOM);
-    HTMLElement::reportMemoryUsage(memoryObjectInfo);
-    info.addMember(m_observers, "observers");
-    info.addMember(m_context, "context");
-    info.addMember(m_imageBuffer, "imageBuffer");
-    info.addMember(m_contextStateSaver, "contextStateSaver");
-    info.addMember(m_presentedImage, "presentedImage");
-    info.addMember(m_copiedImage, "copiedImage");
-}
-
 }