Fix WebSocket to set first party for cookies

third_party/WebKit/LayoutTests/http/tests/websocket/resources/cookie-test-util.js

Index: third_party/WebKit/LayoutTests/http/tests/websocket/resources/cookie-test-util.js
diff --git a/third_party/WebKit/LayoutTests/http/tests/websocket/resources/cookie-test-util.js b/third_party/WebKit/LayoutTests/http/tests/websocket/resources/cookie-test-util.js
new file mode 100644
index 0000000000000000000000000000000000000000..9d5492eaf1e5b4ae131bfd8e03c355397b8049c6
--- /dev/null
+++ b/third_party/WebKit/LayoutTests/http/tests/websocket/resources/cookie-test-util.js
@@ -0,0 +1,25 @@
+// Normalize a cookie string
+function normalizeCookie(cookie) {
+  // Split the cookie string, sort it and then put it back together.
+  return cookie.split('; ').sort().join('; ');
+}
+
+function clear(server) {
+  return new Promise(resolve => {
+    const ws = new WebSocket(server + '/set-cookie?clear=1');
+    ws.onopen = () => {
+      ws.close();
+    };
+    ws.onclose = resolve;
+  });
+}
+
+function setCookie(server) {
+  return new Promise(resolve => {
+    const ws = new WebSocket(server + '/set-cookie');
+    ws.onopen = () => {
+      ws.close();
+    };
+    ws.onclose = resolve;
+  });
+}