Add test for showing confirmation dialog for unsecure signin

net/test/embedded_test_server/embedded_test_server.cc

Index: net/test/embedded_test_server/embedded_test_server.cc
diff --git a/net/test/embedded_test_server/embedded_test_server.cc b/net/test/embedded_test_server/embedded_test_server.cc
index 75b46e22166e6fb8aaaccddaf74e46dd863f3072..a0243eef40a1186bd5555d4159050ea4bf147e77 100644
--- a/net/test/embedded_test_server/embedded_test_server.cc
+++ b/net/test/embedded_test_server/embedded_test_server.cc
@@ -198,6 +198,24 @@ void EmbeddedTestServer::InitializeOnIOThread() {
 void EmbeddedTestServer::ListenOnIOThread() {
   DCHECK(io_thread_->message_loop_proxy()->BelongsToCurrentThread());
   DCHECK(Started());
+
+#if !defined(OS_POSIX)
+  // Releases the socket here so that we could rebind it and watch it on the
+  // right IO thread below. An alternative is to simply call
+  // StreamListenSocket::WatchSocket, which is protected at the moment.
+  // This hack is only needed for non POSIX platforms, since on POSIX platforms
+  // StreamListenSocket::Listen calls StreamListenSocket::WatchSocket inside the
+  // function.
+  listen_socket_.reset();
+
+  SocketDescriptor socket_descriptor =
+      TCPListenSocket::CreateAndBind("127.0.0.1", port_);

[xiyuan, 2014/08/11 22:00:41]

Thank you for digging through the problem. 

Maybe we want to fix it in HttpListenSocket (this seems to be a test class
defined in this file) by calling or exposing WatchSocket. Rebinding to |port_|
would be flaky on test bots where many test servers are running and might steal
the |port_| once it is released.

[oshima, 2014/08/12 04:27:25]

sounds good to me.

If this was broken, I'm curious to know why tests were passing?

[guohui, 2014/08/12 15:55:19]

thanks xiyuan, missed that =)

i think it is because the approach of splitting into two parts has only been
implemented in CrOS tests so far.

+  if (socket_descriptor == kInvalidSocket)
+    return;
+
+  listen_socket_.reset(new HttpListenSocket(socket_descriptor, this));
+#endif
+
   listen_socket_->Listen();
 }