Client plugin changes to support third party authentication.

remoting/client/client_user_interface.h

Index: remoting/client/client_user_interface.h
diff --git a/remoting/client/client_user_interface.h b/remoting/client/client_user_interface.h
index 4b32a70ff597716486c543bc7143112c878b78fa..646c7c8ba26fb3abfb74ea70225178e74eb1153a 100644
--- a/remoting/client/client_user_interface.h
+++ b/remoting/client/client_user_interface.h
@@ -7,6 +7,7 @@
 
 #include "base/basictypes.h"
 #include "remoting/protocol/connection_to_host.h"
+#include "remoting/protocol/third_party_client_authenticator.h"
 
 namespace remoting {
 
@@ -34,6 +35,11 @@ class ClientUserInterface {
 
   // Get the view's CursorShapeStub implementation.
   virtual protocol::CursorShapeStub* GetCursorShapeStub() = 0;
+
+  // Get the view's TokenFetcher implementation.
+  // The TokenFetcher implementation may require interactive authentication.
+  virtual scoped_ptr<protocol::ThirdPartyClientAuthenticator::TokenFetcher>
+  GetTokenFetcher(const std::string& host_public_key) = 0;
 };
 
 }  // namespace remoting