Add iterator object to iterate efficiently over an Element's attributes

Source/core/html/HTMLObjectElement.cpp

Index: Source/core/html/HTMLObjectElement.cpp
diff --git a/Source/core/html/HTMLObjectElement.cpp b/Source/core/html/HTMLObjectElement.cpp
index 326eb083d1c9b011f678538bea34b96f01df3701..c62aa35385805647eb56aa2a17fd130effb05ea1 100644
--- a/Source/core/html/HTMLObjectElement.cpp
+++ b/Source/core/html/HTMLObjectElement.cpp
@@ -188,13 +188,13 @@ void HTMLObjectElement::parametersForPlugin(Vector<String>& paramNames, Vector<S
 
     // Turn the attributes of the <object> element into arrays, but don't override <param> values.
     if (hasAttributes()) {
-        unsigned attributeCount = this->attributeCount();
-        for (unsigned i = 0; i < attributeCount; ++i) {
-            const Attribute& attribute = attributeItem(i);
-            const AtomicString& name = attribute.name().localName();
+        AttributeIteratorAccessor attributes = attributesIterator();
+        AttributeConstIterator end = attributes.end();
+        for (AttributeConstIterator it = attributes.begin(); it != end; ++it) {
+            const AtomicString& name = it->name().localName();
             if (!uniqueParamNames.contains(name.impl())) {
                 paramNames.append(name.string());
-                paramValues.append(attribute.value().string());
+                paramValues.append(it->value().string());
             }
         }
     }