Set empty shared secret for Me2Me hosts.

remoting/host/simple_host_process.cc

Index: remoting/host/simple_host_process.cc
diff --git a/remoting/host/simple_host_process.cc b/remoting/host/simple_host_process.cc
index c19a73c0dae0a3ca67a34dffa61e18b65a3988ac..c3acb5d6f9ff7ba06d3ae5b213b18e3d33e974db 100644
--- a/remoting/host/simple_host_process.cc
+++ b/remoting/host/simple_host_process.cc
@@ -192,6 +192,16 @@ class SimpleHost {
 
     // Let the chromoting host run until the shutdown task is executed.
     host_->Start();
+
+    // Set an empty shared-secret for Me2Me.
+    // TODO(lambroslambrou): This is a temporary fix, pending a Me2Me-specific
+    // AuthenticatorFactory.
+    if (!is_it2me_) {
+      context.network_message_loop()->PostTask(
+          FROM_HERE, base::Bind(&ChromotingHost::SetSharedSecret, host_.get(),
+                                std::string()));
+    }
+
     message_loop.MessageLoop::Run();
 
     // And then stop the chromoting context.