[Proximity Auth] Port the UnlockManager class.

components/proximity_auth/proximity_auth_client.h

Index: components/proximity_auth/proximity_auth_client.h
diff --git a/components/proximity_auth/proximity_auth_client.h b/components/proximity_auth/proximity_auth_client.h
index eb846cd97d75021f0ece37819190927a1eeb12bd..b5d2c7b834dd46da64912b7c7779cc860d7ac796 100644
--- a/components/proximity_auth/proximity_auth_client.h
+++ b/components/proximity_auth/proximity_auth_client.h
@@ -7,6 +7,8 @@
 
 #include <string>
 
+#include "components/proximity_auth/screenlock_state.h"
+
 namespace proximity_auth {
 
 // An interface that needs to be supplied to the Proximity Auth component by its
@@ -19,10 +21,19 @@ class ProximityAuthClient {
   // Returns the authenticated username.
   virtual std::string GetAuthenticatedUsername() const = 0;
 
+  // Updates the user pod on the signin or lock screen to reflect the provided
+  // screenlock state.
+  virtual void UpdateScreenlockState(ScreenlockState state) = 0;
+
   // Finalizes an unlock attempt initiated by the user. If |success| is true,
   // the screen is unlocked; otherwise, the auth attempt is rejected. An auth
   // attempt must be in progress before calling this function.
   virtual void FinalizeUnlock(bool success) = 0;
+
+  // Finalizes a sign-in attempt initiated by the user. If |success| is true,
+  // the user is signed in; otherwise, the auth attempt is rejected. An auth
+  // attempt must be in progress before calling this function.
+  virtual void FinalizeSignin(const std::string& secret) = 0;
 };
 
 }  // namespace proximity_auth