Moving host status events monitoring to a separate interface (HostStatusMonitor).

remoting/host/curtaining_host_observer.h

Index: remoting/host/curtaining_host_observer.h
diff --git a/remoting/host/curtaining_host_observer.h b/remoting/host/curtaining_host_observer.h
index a952344a4265304eba43ae2a1e91430b730ffebc..20771f4a387a9ad6978b7c7541a3b73b3e769786 100644
--- a/remoting/host/curtaining_host_observer.h
+++ b/remoting/host/curtaining_host_observer.h
@@ -10,19 +10,19 @@
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
-#include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/memory/weak_ptr.h"
 #include "remoting/host/host_status_observer.h"
 
 namespace remoting {
 
 class CurtainMode;
-class ChromotingHost;
+class HostStatusMonitor;
 
 class CurtainingHostObserver : public HostStatusObserver {
  public:
   CurtainingHostObserver(CurtainMode *curtain,
-                         scoped_refptr<ChromotingHost> host);
+                         base::WeakPtr<HostStatusMonitor> monitor);
   virtual ~CurtainingHostObserver();
 
   // Enables/disables curtaining when one or more clients are connected.
@@ -35,7 +35,7 @@ class CurtainingHostObserver : public HostStatusObserver {
 
  private:
   CurtainMode* curtain_;
-  scoped_refptr<ChromotingHost> host_;
+  base::WeakPtr<HostStatusMonitor> monitor_;
   std::set<std::string> active_clients_;
   bool enable_curtaining_;
 };