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

components/proximity_auth/bluetooth_throttler.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_H
-#define COMPONENTS_PROXIMITY_AUTH_BLUETOOTH_THROTTLER_H
-
-namespace base {
-class TimeDelta;
-}
-
-namespace proximity_auth {
-
-class Connection;
-
-// An interface for throttling 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 BluetoothThrottler {
- public:
-  virtual ~BluetoothThrottler() {}
-
-  // Returns the current delay that must be respected prior to reattempting to
-  // establish a connection with the remote device. The returned value is 0 if
-  // no delay is needed.
-  virtual base::TimeDelta GetDelay() const = 0;
-
-  // Should be called when a connection to the remote device is established.
-  // Note that the |connection| is passed as a weak reference. The throttler
-  // will ensure, by registering as an observer, that it never attempts to use
-  // the connection after it has been destroyed.
-  virtual void OnConnection(Connection* connection) = 0;
-};
-
-}  // namespace proximity_auth
-
-#endif  // COMPONENTS_PROXIMITY_AUTH_BLUETOOTH_THROTTLER_H