Add use counters for using Attrs as Nodes.

Source/bindings/tests/results/V8TestEventTarget.cpp

Index: Source/bindings/tests/results/V8TestEventTarget.cpp
diff --git a/Source/bindings/tests/results/V8TestEventTarget.cpp b/Source/bindings/tests/results/V8TestEventTarget.cpp
index 77df482833531fea4c4688fa1c8de8be22dbc5b6..2cc121de2bd0d7eaa6c89ee946c8419c31fcd047 100644
--- a/Source/bindings/tests/results/V8TestEventTarget.cpp
+++ b/Source/bindings/tests/results/V8TestEventTarget.cpp
@@ -34,12 +34,14 @@
 #include "V8TestEventTarget.h"
 
 #include "RuntimeEnabledFeatures.h"
+#include "V8Attr.h"
 #include "V8Node.h"
 #include "bindings/v8/ExceptionState.h"
 #include "bindings/v8/V8DOMConfiguration.h"
 #include "bindings/v8/V8ObjectConstructor.h"
 #include "core/dom/ContextFeatures.h"
 #include "core/dom/Document.h"
+#include "core/frame/UseCounter.h"
 #include "platform/TraceEvent.h"
 #include "wtf/GetPtr.h"
 #include "wtf/RefPtr.h"
@@ -129,6 +131,8 @@ static void indexedPropertyGetterCallback(uint32_t index, const v8::PropertyCall
 
 static void indexedPropertySetter(uint32_t index, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
+    if (V8DOMWrapper::isWrapperOfType(jsValue, &V8Attr::wrapperTypeInfo))
+        UseCounter::count(activeExecutionContext(), UseCounter::AttrUsedAsNodeParameter);
     TestEventTarget* collection = V8TestEventTarget::toNative(info.Holder());
     V8TRYCATCH_VOID(Node*, propertyValue, V8Node::hasInstance(jsValue, info.GetIsolate(), worldType(info.GetIsolate())) ? V8Node::toNative(v8::Handle<v8::Object>::Cast(jsValue)) : 0);
     bool result = collection->anonymousIndexedSetter(index, propertyValue);