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

components/proximity_auth/bluetooth_throttler_impl.h

-// Copyright 2015 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_BLUETOOTH_THROTTLER_IMPL_H
-#define COMPONENTS_PROXIMITY_AUTH_BLUETOOTH_THROTTLER_IMPL_H
-
-#include <memory>
-#include <set>
-
-#include "base/macros.h"
-#include "base/time/time.h"
-#include "components/proximity_auth/bluetooth_throttler.h"
-#include "components/proximity_auth/connection_observer.h"
-
-namespace base {
-class TickClock;
-}
-
-namespace proximity_auth {
-
-class Connection;
-
-// This class throttles repeated connection attempts to the same device. This
-// throttling is necessary to prevent a kernel race condition when connecting
-// before the previous connection fully closes, putting the connection in a
-// corrupted, and unrecoverable state. http://crbug.com/345232
-class BluetoothThrottlerImpl : public BluetoothThrottler,
-                               public ConnectionObserver {
- public:
-  // Creates a throttler for connections to a remote device, using the |clock|
-  // as a time source.
-  explicit BluetoothThrottlerImpl(std::unique_ptr<base::TickClock> clock);
-  ~BluetoothThrottlerImpl() override;
-
-  // BluetoothThrottler:
-  base::TimeDelta GetDelay() const override;
-  void OnConnection(Connection* connection) override;
-
- protected:
-  // Returns the duration to wait, after disconnecting, before reattempting a
-  // connection to the remote device. Exposed for testing.
-  base::TimeDelta GetCooldownTimeDelta() const;
-
- private:
-  // ConnectionObserver:
-  void OnConnectionStatusChanged(Connection* connection,
-                                 Connection::Status old_status,
-                                 Connection::Status new_status) override;
-
-  // Tracks the last seen disconnect time for the |remote_device_|.
-  base::TimeTicks last_disconnect_time_;
-
-  // The time source.
-  std::unique_ptr<base::TickClock> clock_;
-
-  // The currently connected connections.
-  // Each connection is stored as a weak reference, which is safe because |this|
-  // instance is registered as an observer, and will unregister when the
-  // connection disconnects, which is guaranteed to occur before the connection
-  // is destroyed.
-  std::set<Connection*> connections_;
-
-  DISALLOW_COPY_AND_ASSIGN(BluetoothThrottlerImpl);
-};
-
-}  // namespace proximity_auth
-
-#endif  // COMPONENTS_PROXIMITY_AUTH_BLUETOOTH_THROTTLER_IMPL_H