[Draft] Fix canceling pin prompt causes host overload

remoting/protocol/me2me_host_authenticator_factory.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "remoting/protocol/me2me_host_authenticator_factory.h"
 
 #include "base/base64.h"
 #include "base/strings/string_util.h"
 #include "remoting/base/rsa_key_pair.h"
 #include "remoting/protocol/channel_authenticator.h"
@@ skipping 12 matching lines @@
   RejectingAuthenticator()
       : state_(WAITING_MESSAGE) {
   }
   virtual ~RejectingAuthenticator() {
   }
 
   virtual State state() const OVERRIDE {
     return state_;
   }
 
+  virtual bool has_auth_started() const OVERRIDE {
+    return false;
+  }
+
   virtual RejectionReason rejection_reason() const OVERRIDE {
     DCHECK_EQ(state_, REJECTED);
     return INVALID_CREDENTIALS;
   }
 
   virtual void ProcessMessage(const buzz::XmlElement* message,
                               const base::Closure& resume_callback) OVERRIDE {
     DCHECK_EQ(state_, WAITING_MESSAGE);
     state_ = REJECTED;
     resume_callback.Run();
@@ skipping 111 matching lines @@
     return NegotiatingHostAuthenticator::CreateWithSharedSecret(
         local_cert_, key_pair_, shared_secret_hash_.value,
         shared_secret_hash_.hash_function, pairing_registry_);
   }
 
   return scoped_ptr<Authenticator>(new RejectingAuthenticator());
 }
 
 }  // namespace protocol
 }  // namespace remoting