Remove AttributeCollection's findIndex(Attr*) by using QualifiedName

third_party/WebKit/Source/core/dom/Element.cpp

Index: third_party/WebKit/Source/core/dom/Element.cpp
diff --git a/third_party/WebKit/Source/core/dom/Element.cpp b/third_party/WebKit/Source/core/dom/Element.cpp
index cdd30388ab6e0fcec2c79b5af31d6fcd7d287b81..e785c06dfc53d2423487e8af18cf389fe9095aa8 100644
--- a/third_party/WebKit/Source/core/dom/Element.cpp
+++ b/third_party/WebKit/Source/core/dom/Element.cpp
@@ -2201,7 +2201,7 @@ PassRefPtrWillBeRawPtr<Attr> Element::removeAttributeNode(Attr* attr, ExceptionS
 
     synchronizeAttribute(attr->qualifiedName());
 
-    size_t index = elementData()->attributes().findIndex(attr);
+    size_t index = elementData()->attributes().findIndex(attr->qualifiedName());
     if (index == kNotFound) {
         exceptionState.throwDOMException(NotFoundError, "The attribute was not found on this element.");
         return nullptr;