Cleanup AuthenticatorMethod usage.

remoting/protocol/auth_util.h

Index: remoting/protocol/auth_util.h
diff --git a/remoting/protocol/auth_util.h b/remoting/protocol/auth_util.h
index 61f98cf3d423326fb12bdb7b66c741b79c223a8f..8cc5cfdc1a74cdfba3d4d439020ccc1767764bd4 100644
--- a/remoting/protocol/auth_util.h
+++ b/remoting/protocol/auth_util.h
@@ -31,18 +31,10 @@ const size_t kSharedSecretHashLength = 32;
 // Size of the HMAC-SHA-256 digest used for channel authentication.
 const size_t kAuthDigestLength = 32;
 
-// TODO(sergeyu): The following two methods are used for V1
-// authentication. Remove them when we finally switch to V2
-// authentication method. crbug.com/110483 .
-
-// Generates auth token for the specified |jid| and |access_code|.
-std::string GenerateSupportAuthToken(const std::string& jid,
-                                     const std::string& access_code);
-
-// Verifies validity of an |access_token|.
-bool VerifySupportAuthToken(const std::string& jid,
-                            const std::string& access_code,
-                            const std::string& auth_token);
+// Applies the specified hash function to |shared_secret| with the

[Jamie, 2016/03/08 02:17:38]

There is no specified hash function. Perhaps s/the specified hash
function/HMAC-SHA-256/?

[Sergey Ulanov, 2016/03/08 18:32:40]

Done.

+// specified |tag| as a key.
+std::string GetSharedSecretHash(const std::string& tag,
+                                const std::string& shared_secret);
 
 // Returns authentication bytes that must be used for the given
 // |socket|. Empty string is returned in case of failure.