[Not for review] Implement a <blink> tag in Blink-in-JS

Source/core/html/HTMLBlinkElement.js

Index: Source/core/html/HTMLBlinkElement.js
diff --git a/Source/core/html/HTMLBlinkElement.js b/Source/core/html/HTMLBlinkElement.js
new file mode 100644
index 0000000000000000000000000000000000000000..4cb973ecfa420c08d3945e8bc91306c31974c6e7
--- /dev/null
+++ b/Source/core/html/HTMLBlinkElement.js
@@ -0,0 +1,19 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+'use strict';
+
+installClass('HTMLBlinkElement', function(global, HTMLBlinkElementPrototype) {
+    HTMLBlinkElementPrototype.attachedCallback = function() {
+        this.displayed_ = 1;
+        this.timer_ = setInterval(function() {
+            this.setAttribute("style", this.displayed_ ? "visibility:visible" : "visibility:hidden");
+            this.displayed_ ^= 1;
+        }.bind(this), 500);
+    };
+
+    HTMLBlinkElementPrototype.detachedCallback = function() {
+        clearInterval(this.timer_);
+    };
+});