[CrOS Tether] Create ble_constants.h/cc, which include common constants to be shared among multiple…

chromeos/components/tether/ble_advertisement_device_queue.h

 // Copyright 2016 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 CHROMEOS_COMPONENTS_TETHER_BLE_ADVERTISEMENT_DEVICE_QUEUE_H_
 #define CHROMEOS_COMPONENTS_TETHER_BLE_ADVERTISEMENT_DEVICE_QUEUE_H_
 
 #include <vector>
 
 #include "base/macros.h"
 #include "components/cryptauth/remote_device.h"
 
 namespace chromeos {
 
 namespace tether {
 
 // Queue of devices to which to advertise. Because only
 // |kMaxConcurrentAdvertisements| devices can be advertised to concurrently,
 // this queue maintains the order of devices to ensure that each device gets its
 // fair share of time spent contacting it.
 class BleAdvertisementDeviceQueue {
  public:
-  // The maximum number of devices to which to advertise concurrently. If more
-  // than this number of devices are registered, some advertisement must be
-  // stopped before new ones can be added.
-  //
-  // Note that this upper limit on concurrent advertisements is imposed due to a
-  // hardware limit of advertisements.
-  static const int kMaxConcurrentAdvertisements;
-
   BleAdvertisementDeviceQueue();
   virtual ~BleAdvertisementDeviceQueue();
 
   // Updates the queue with the given |devices|. Devices which are already in
   // the queue and are not in |devices| are removed from the queue, and all
   // devices which are not in the queue but are in |devices| are added to the
   // end of the queue. Note devices that are already in the queue will not
   // change order as a result of this function being called to ensure that the
   // queue remains in order. Returns whether the device list has changed due to
   // the function call.
@@ skipping 14 matching lines @@
   std::vector<cryptauth::RemoteDevice> device_queue_;
 
   DISALLOW_COPY_AND_ASSIGN(BleAdvertisementDeviceQueue);
 };
 
 }  // namespace tether
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_COMPONENTS_TETHER_BLE_ADVERTISEMENT_DEVICE_QUEUE_H_