Remove SVGZoomEvent interface and onzoom attribute

third_party/WebKit/Source/core/svg/SVGSVGElement.cpp

Index: third_party/WebKit/Source/core/svg/SVGSVGElement.cpp
diff --git a/third_party/WebKit/Source/core/svg/SVGSVGElement.cpp b/third_party/WebKit/Source/core/svg/SVGSVGElement.cpp
index eb3e57ad754fcf4904bb7862a2ebec366cacc232..73bddfc0bd4f4625d3947890011c6ed5d1696afd 100644
--- a/third_party/WebKit/Source/core/svg/SVGSVGElement.cpp
+++ b/third_party/WebKit/Source/core/svg/SVGSVGElement.cpp
@@ -177,9 +177,6 @@ void SVGSVGElement::parseAttribute(const QualifiedName& name, const AtomicString
             document().setWindowAttributeEventListener(EventTypeNames::resize, createAttributeEventListener(document().frame(), name, value, eventParameterName()));
         } else if (name == HTMLNames::onscrollAttr) {
             document().setWindowAttributeEventListener(EventTypeNames::scroll, createAttributeEventListener(document().frame(), name, value, eventParameterName()));
-        } else if (name == SVGNames::onzoomAttr) {
-            Deprecation::countDeprecation(document(), UseCounter::SVGZoomEvent);
-            document().setWindowAttributeEventListener(EventTypeNames::zoom, createAttributeEventListener(document().frame(), name, value, eventParameterName()));
         } else {
             setListener = false;
         }