Avoid branching in createAttributeEventListener

Source/core/svg/SVGElement.cpp

Index: Source/core/svg/SVGElement.cpp
diff --git a/Source/core/svg/SVGElement.cpp b/Source/core/svg/SVGElement.cpp
index a567999d9cafb910faacd4b635e881214b46b36a..a2c5200b10824f0c7a86130c795d1b8da726059f 100644
--- a/Source/core/svg/SVGElement.cpp
+++ b/Source/core/svg/SVGElement.cpp
@@ -675,7 +675,7 @@ void SVGElement::parseAttribute(const QualifiedName& name, const AtomicString& v
         // standard events
         const AtomicString& eventName = HTMLElement::eventNameForAttributeName(name);
         if (!eventName.isNull())
-            setAttributeEventListener(eventName, createAttributeEventListener(this, name, value));
+            setAttributeEventListener(eventName, createAttributeEventListener(this, name, value, eventParameterName()));
         else
             Element::parseAttribute(name, value);
     }
@@ -1176,4 +1176,10 @@ void SVGElement::trace(Visitor* visitor)
     Element::trace(visitor);
 }
 
+const AtomicString& SVGElement::eventParameterName()
+{
+    DEFINE_STATIC_LOCAL(const AtomicString, evtString, ("evt", AtomicString::ConstructFromLiteral));
+    return evtString;
+}
+
 }