[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 7a26778728e6f3b75dfd52c6a122472f8cc64e98..1420479a563fbd9df5d6dbceb126a8c0f1924ca4 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
@@ -18,6 +20,18 @@ 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 the previously started auth attempt for unlock. Cancels the
+  // current auth attempt if one exists.
+  virtual void FinalizeUnlock(bool success) = 0;
+
+  // Finalizes the previously started auth attempt for sign-in. Cancels the
+  // current auth attempt if one exists.
+  virtual void FinalizeSignin(const std::string& secret) = 0;
 };
 
 }  // namespace proximity_auth