Reflected attributes should be removed when 'null', 'undefined' or 'false' is specified

Source/core/html/HTMLMarqueeElement.js

Index: Source/core/html/HTMLMarqueeElement.js
diff --git a/Source/core/html/HTMLMarqueeElement.js b/Source/core/html/HTMLMarqueeElement.js
index 3ca0e32892c0144609d39a3b742d80071620fc7c..f9cc913be75737536e4ab90314a60b844ff12b22 100644
--- a/Source/core/html/HTMLMarqueeElement.js
+++ b/Source/core/html/HTMLMarqueeElement.js
@@ -62,10 +62,10 @@ installClass('HTMLMarqueeElement', function(global) {
                 return this.hasAttribute(attributeName);
             },
             set: function(value) {
-                if (value.valueOf() === false)
-                    this.removeAttribute(attributeName);
+                if (value)
+                    this.setAttribute(attributeName, '');
                 else
-                    this.setAttribute(attributeName, value ? '' : null);
+                    this.removeAttribute(attributeName);
             },
         });
     }