Add end to end client cert auth test for wss

chrome/test/base/ui_test_utils.h

Index: chrome/test/base/ui_test_utils.h
diff --git a/chrome/test/base/ui_test_utils.h b/chrome/test/base/ui_test_utils.h
index cf9146d15843334d82c2f4358bbdcd70d8e3b3ed..7b3ab37d91930b05b850a95d5aed223e1dd64681 100644
--- a/chrome/test/base/ui_test_utils.h
+++ b/chrome/test/base/ui_test_utils.h
@@ -360,6 +360,9 @@ class TestWebSocketServer {
   // Serves with TLS.
   void UseTLS();
 
+  // Requests client cert authentication.
+  void UseClientAuthentication();
+
   // Starts the python websocket server using |root_directory|. Returns whether
   // the server was successfully started.
   bool Start(const FilePath& root_directory);
@@ -398,6 +401,9 @@ class TestWebSocketServer {
   // If the python websocket server serves with TLS.
   bool secure_;
 
+  // If the python websocket server requests client cert authentication.
+  bool client_authentication_;
+
   DISALLOW_COPY_AND_ASSIGN(TestWebSocketServer);
 };