Protocol / client plugin changes to support interactively asking for a PIN

remoting/client/plugin/chromoting_instance.h

Index: remoting/client/plugin/chromoting_instance.h
diff --git a/remoting/client/plugin/chromoting_instance.h b/remoting/client/plugin/chromoting_instance.h
index 9765f9688b5449bfa7d752524c18d663df1c7c5d..806559396ae0a57d32b47c16e32d7762908a327b 100644
--- a/remoting/client/plugin/chromoting_instance.h
+++ b/remoting/client/plugin/chromoting_instance.h
@@ -39,6 +39,7 @@
 #include "remoting/protocol/cursor_shape_stub.h"
 #include "remoting/protocol/input_event_tracker.h"
 #include "remoting/protocol/mouse_input_filter.h"
+#include "remoting/protocol/negotiating_authenticator.h"
 
 namespace base {
 class DictionaryValue;
@@ -56,6 +57,7 @@ class ChromotingStats;
 class ClientContext;
 class FrameConsumerProxy;
 class PepperAudioPlayer;
+class PepperPinFetcher;
 class PepperView;
 class PepperXmppProxy;
 class RectangleUpdateDecoder;
@@ -133,6 +135,12 @@ class ChromotingInstance :
   void NotifyClientResolution(int width, int height, int x_dpi, int y_dpi);
   void PauseVideo(bool pause);
   void PauseAudio(bool pause);
+  void FetchPinFromDialog(
+      const protocol::PinFetchedCallback& pin_fetched_callback);
+  static void FetchPinFromString(
+      const std::string& shared_secret,
+      const protocol::PinFetchedCallback& pin_fetched_callback);
+  void OnPinFetched(const std::string& shared_secret);
 
   // Return statistics record by ChromotingClient.
   // If no connection is currently active then NULL will be returned.
@@ -210,6 +218,10 @@ class ChromotingInstance :
   // connection.
   scoped_refptr<PepperXmppProxy> xmpp_proxy_;
 
+  // PIN Fetcher.
+  bool use_async_pin_dialog_;
+  protocol::PinFetchedCallback pin_fetched_callback_;
+
   base::WeakPtrFactory<ChromotingInstance> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromotingInstance);