Port sky-scrollable to Dart

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 78d958c9d31c2020761e7fe64a2f3fc8ef43ded8..dca6f3c2fa31b2c07bcd04ff0dc4b296b54c5bee 100644
--- a/sky/engine/core/dom/Element.cpp
+++ b/sky/engine/core/dom/Element.cpp
@@ -992,6 +992,15 @@ Vector<RefPtr<Attr>> Element::getAttributes()
     return attributes;
 }
 
+void Element::setAttributes(const Vector<RefPtr<Attr>>& attrs, ExceptionState& es)
+{
+    for (const auto& attr : attrs) {
+        setAttribute(attr->name(), attr->value(), es);
+        if (es.had_exception())
+            return;
+    }
+}
+
 void Element::focus(bool restorePreviousSelection, FocusType type)
 {
     if (!inDocument())