Add support for Element#getAttributes

sky/engine/core/dom/Element.cpp

Index: sky/engine/core/dom/Element.cpp
diff --git a/sky/engine/core/dom/Element.cpp b/sky/engine/core/dom/Element.cpp
index c450e8eecb5fd9e929a8b70b635fda3dcff43feb..731cb21387ff0f8ad43eed193cbafb8c826d3488 100644
--- a/sky/engine/core/dom/Element.cpp
+++ b/sky/engine/core/dom/Element.cpp
@@ -1326,6 +1326,17 @@ void Element::removeAttribute(const AtomicString& localName)
     removeAttributeInternal(index, NotInSynchronizationOfLazyAttribute);
 }
 
+Vector<RefPtr<Attr>> Element::getAttributes()
+{
+    if (!elementData())
+        return Vector<RefPtr<Attr>>();
+    synchronizeAllAttributes();
+    Vector<RefPtr<Attr>> attributes;
+    for (const Attribute& attribute : elementData()->attributes())
+        attributes.append(ensureAttr(attribute.name()));
+    return attributes;
+}
+
 PassRefPtr<Attr> Element::getAttributeNode(const AtomicString& localName)
 {
     if (!elementData())