Remove ClientLogin support from remoting host

remoting/host/signaling_connector.h

Index: remoting/host/signaling_connector.h
diff --git a/remoting/host/signaling_connector.h b/remoting/host/signaling_connector.h
index acb69218c19afd49df16ae1a2a5e48ec9f0f7327..8a59e903596fccbd06b76083c16d56732ffc38fa 100644
--- a/remoting/host/signaling_connector.h
+++ b/remoting/host/signaling_connector.h
@@ -34,13 +34,10 @@ class SignalingConnector
   SignalingConnector(
       XmppSignalStrategy* signal_strategy,
       scoped_ptr<DnsBlackholeChecker> dns_blackhole_checker,
+      scoped_ptr<OAuthTokenGetter> oauth_token_getter,
       const base::Closure& auth_failed_callback);
   ~SignalingConnector() override;
 
-  // May be called immediately after the constructor to enable OAuth
-  // access token updating.
-  void EnableOAuth(scoped_ptr<OAuthTokenGetter> oauth_token_getter);
-
   // OAuthTokenGetter callback.
   void OnAccessToken(OAuthTokenGetter::Status status,
                      const std::string& user_email,