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

chromeos/components/tether/ble_advertisement_device_queue.h

Index: chromeos/components/tether/ble_advertisement_device_queue.h
diff --git a/chromeos/components/tether/ble_advertisement_device_queue.h b/chromeos/components/tether/ble_advertisement_device_queue.h
index 84cff21500e4a4d662ed7cac69a9e0098214829c..27ef00d244ce9cc60c3bd9c9e9e51fe8f22b2ce7 100644
--- a/chromeos/components/tether/ble_advertisement_device_queue.h
+++ b/chromeos/components/tether/ble_advertisement_device_queue.h
@@ -20,14 +20,6 @@ namespace tether {
 // 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();