[OBSOLETE] De-flake the websocket/close.html layout test

LayoutTests/http/tests/websocket/resources/mac-dropped-wakeup-workaround.js

Index: LayoutTests/http/tests/websocket/resources/mac-dropped-wakeup-workaround.js
diff --git a/LayoutTests/http/tests/websocket/resources/mac-dropped-wakeup-workaround.js b/LayoutTests/http/tests/websocket/resources/mac-dropped-wakeup-workaround.js
new file mode 100644
index 0000000000000000000000000000000000000000..8eb20e24a543f25c294012cc9a9e2766eac1202d
--- /dev/null
+++ b/LayoutTests/http/tests/websocket/resources/mac-dropped-wakeup-workaround.js
@@ -0,0 +1,12 @@
+if (navigator.userAgent.search(/Macintosh.*Chrome/) != -1) {
+    (function() {
+        var ws = new WebSocket("ws://127.0.0.1:8880/echo");
+        var timer;
+        ws.onopen = function() {
+            timer = setInterval(sendMessage, 20);
+        };
+        function sendMessage() {
+            ws.send("");
+        };
+    })();
+}