Migrate weave-related classes from proximity_auth/ble to cryptauth/ble.

components/proximity_auth/connection_observer.h

-// 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.
-
-#ifndef COMPONENTS_PROXIMITY_AUTH_CONNECTION_OBSERVER_H
-#define COMPONENTS_PROXIMITY_AUTH_CONNECTION_OBSERVER_H
-
-#include "components/proximity_auth/connection.h"
-
-namespace proximity_auth {
-
-class WireMessage;
-
-// An interface for observing events that happen on a Connection.
-class ConnectionObserver {
- public:
-  virtual ~ConnectionObserver() {}
-
-  // Called when the |connection|'s status changes from |old_status| to
-  // |new_status|. The |connectoin| is guaranteed to be non-null.
-  virtual void OnConnectionStatusChanged(Connection* connection,
-                                         Connection::Status old_status,
-                                         Connection::Status new_status) {}
-
-  // Called when a |message| is received from a remote device over the
-  // |connection|.
-  virtual void OnMessageReceived(const Connection& connection,
-                                 const WireMessage& message) {}
-
-  // Called after a |message| is sent to the remote device over the
-  // |connection|. |success| is |true| iff the message is sent successfully.
-  virtual void OnSendCompleted(const Connection& connection,
-                               const WireMessage& message,
-                               bool success) {}
-};
-
-}  // namespace proximity_auth
-
-#endif  // COMPONENTS_PROXIMITY_AUTH_CONNECTION_OBSERVER_H