Add gnubby authentication to remoting host

remoting/host/basic_desktop_environment.cc

Index: remoting/host/basic_desktop_environment.cc
diff --git a/remoting/host/basic_desktop_environment.cc b/remoting/host/basic_desktop_environment.cc
index 7698ca8a9853ca385f510b5b9900343dc0da01b1..011bf5c8abf5b7ed6a161cce5db1028e42fbc82d 100644
--- a/remoting/host/basic_desktop_environment.cc
+++ b/remoting/host/basic_desktop_environment.cc
@@ -9,6 +9,7 @@
 #include "base/single_thread_task_runner.h"
 #include "remoting/host/audio_capturer.h"
 #include "remoting/host/client_session_control.h"
+#include "remoting/host/gnubby_auth_handler.h"
 #include "remoting/host/input_injector.h"
 #include "remoting/host/screen_controls.h"
 #include "third_party/webrtc/modules/desktop_capture/screen_capturer.h"
@@ -44,6 +45,11 @@ std::string BasicDesktopEnvironment::GetCapabilities() const {
 void BasicDesktopEnvironment::SetCapabilities(const std::string& capabilities) {
 }
 
+scoped_ptr<GnubbyAuthHandler> BasicDesktopEnvironment::CreateGnubbyAuthHandler(
+    protocol::ClientStub* client_stub) {
+  return scoped_ptr<GnubbyAuthHandler>();
+}
+
 scoped_ptr<webrtc::ScreenCapturer>
 BasicDesktopEnvironment::CreateVideoCapturer() {
   DCHECK(caller_task_runner_->BelongsToCurrentThread());