Multi-step authentication support in JingleSession.

remoting/protocol/authenticator.h

Index: remoting/protocol/authenticator.h
diff --git a/remoting/protocol/authenticator.h b/remoting/protocol/authenticator.h
index 0f382ed0cd8a2e1c731d365b24e55f9cdf0f2c84..b79fe78a7ca4fefcb86b646775f7ec55fe2908d4 100644
--- a/remoting/protocol/authenticator.h
+++ b/remoting/protocol/authenticator.h
@@ -53,6 +53,17 @@ class Authenticator {
     REJECTED,
   };
 
+  // Returns true if |message| is an Authenticator message.
+  static bool IsAuthenticatorMessage(const buzz::XmlElement* message);
+
+  // Creates an empty Authenticator message, owned by the caller.
+  static buzz::XmlElement* CreateEmptyAuthenticatorMessage();
+
+  // Finds Authenticator message among child elements of |message|, or
+  // returns NULL otherwise.
+  static const buzz::XmlElement* FindAuthenticatorMessage(
+      const buzz::XmlElement* message);
+
   Authenticator() {}
   virtual ~Authenticator() {}