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

chromeos/components/tether/ble_advertisement_device_queue.cc

 // 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.
 
 #include "chromeos/components/tether/ble_advertisement_device_queue.h"
 
 #include <algorithm>
 #include <string>
 
 #include "base/logging.h"
+#include "chromeos/components/tether/ble_constants.h"
 #include "components/proximity_auth/logging/logging.h"
 
 namespace chromeos {
 
 namespace tether {
 
-const int BleAdvertisementDeviceQueue::kMaxConcurrentAdvertisements = 2;
-
 BleAdvertisementDeviceQueue::BleAdvertisementDeviceQueue() {}
 
 BleAdvertisementDeviceQueue::~BleAdvertisementDeviceQueue() {}
 
 bool BleAdvertisementDeviceQueue::SetDevices(
     std::vector<cryptauth::RemoteDevice> devices) {
   // Determine which devices exist in |devices| but not in |device_queue_|, then
   // add them to |device_queue_|.
   std::vector<cryptauth::RemoteDevice> missing_from_queue;
   for (auto& device : devices) {
@@ skipping 80 matching lines @@
   return to_advertise;
 }
 
 size_t BleAdvertisementDeviceQueue::GetSize() const {
   return device_queue_.size();
 }
 
 }  // namespace tether
 
 }  // namespace chromeos