Add abstract interfaces for the transport layer.

remoting/protocol/pepper_session_manager.h

Index: remoting/protocol/pepper_session_manager.h
diff --git a/remoting/protocol/pepper_session_manager.h b/remoting/protocol/pepper_session_manager.h
index 508c161a1081e5074f54850d7919ae014d84e350..0e9a41f27c01c0bf5a98136431976c3e02515471 100644
--- a/remoting/protocol/pepper_session_manager.h
+++ b/remoting/protocol/pepper_session_manager.h
@@ -12,8 +12,8 @@
 #include "base/memory/ref_counted.h"
 #include "net/base/x509_certificate.h"
 #include "remoting/jingle_glue/signal_strategy.h"
-#include "remoting/protocol/pepper_channel.h"
 #include "remoting/protocol/session_manager.h"
+#include "remoting/protocol/transport.h"
 #include "remoting/protocol/transport_config.h"
 
 namespace pp {
@@ -44,7 +44,8 @@ class PepperSession;
 class PepperSessionManager : public SessionManager,
                              public SignalStrategy::Listener {
  public:
-  explicit PepperSessionManager(pp::Instance* pp_instance);
+  explicit PepperSessionManager(
+      scoped_ptr<TransportFactory> transport_factory);
   virtual ~PepperSessionManager();
 
   // SessionManager interface.
@@ -83,7 +84,7 @@ class PepperSessionManager : public SessionManager,
   // Called by PepperSession when it is being destroyed.
   void SessionDestroyed(PepperSession* session);
 
-  pp::Instance* pp_instance_;
+  scoped_ptr<TransportFactory> transport_factory_;
 
   SignalStrategy* signal_strategy_;
   scoped_ptr<AuthenticatorFactory> authenticator_factory_;