Refactor ContinueWindow::Show() to accept a callback parameter.

remoting/host/desktop_environment.h

Index: remoting/host/desktop_environment.h
diff --git a/remoting/host/desktop_environment.h b/remoting/host/desktop_environment.h
index 31335f546f230a850508587040ff8e69657a7d19..28da047e1f227931e2598eb3284cd55ca3763aaf 100644
--- a/remoting/host/desktop_environment.h
+++ b/remoting/host/desktop_environment.h
@@ -62,7 +62,6 @@ class DesktopEnvironment {
 
   void ProcessOnConnect(const std::string& username);
   void ProcessOnLastDisconnect();
-  void ProcessOnPause(bool pause);
 
   void MonitorLocalInputs(bool enable);
 
@@ -73,6 +72,12 @@ class DesktopEnvironment {
   // Show or hide the Continue Sharing window on the UI thread.
   void ShowContinueWindow(bool show);
 
+  // Called by the ContinueWindow implementation (on the UI thread) when the
+  // user dismisses the Continue prompt.
+  // TODO(lambroslambrou): Move this method to the (to be written)
+  // It2MeObserver class.
+  void ContinueSession(bool continue_session);
+
   void StartContinueWindowTimer(bool start);
 
   void OnContinueWindowTimer();