[EasyUnlock] Update ProximityMonitor to only check for RSSI proximity.

components/proximity_auth/messenger_impl.cc

 // Copyright 2014 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 "components/proximity_auth/messenger_impl.h"
 
 #include <utility>
 
 #include "base/base64url.h"
 #include "base/bind.h"
@@ skipping 136 matching lines @@
   base::DictionaryValue message;
   message.SetString(kTypeKey, kMessageTypeUnlockRequest);
   queued_messages_.push_back(PendingMessage(message));
   ProcessMessageQueue();
 }
 
 cryptauth::SecureContext* MessengerImpl::GetSecureContext() const {
   return secure_context_.get();
 }
 
+cryptauth::Connection* MessengerImpl::GetConnection() const {
+  return connection_.get();
+}
+
 MessengerImpl::PendingMessage::PendingMessage() {}
 
 MessengerImpl::PendingMessage::PendingMessage(
     const base::DictionaryValue& message)
     : json_message(SerializeValueToJson(message)),
       type(GetMessageType(message)) {}
 
 MessengerImpl::PendingMessage::PendingMessage(const std::string& message)
     : json_message(message), type(std::string()) {}
 
@@ skipping 194 matching lines @@
   } else {
     PA_LOG(ERROR) << "Message of unknown type '" << pending_message_->type
                   << "' sent.";
   }
 
   pending_message_.reset();
   ProcessMessageQueue();
 }
 
 }  // namespace proximity_auth