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

chromeos/components/tether/BUILD.gn

 # 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.
 
 assert(is_chromeos, "Non-ChromeOS builds cannot depend on //chromeos")
 
 static_library("tether") {
   sources = [
     "ble_advertisement_device_queue.cc",
     "ble_advertisement_device_queue.h",
+    "ble_constants.cc",
+    "ble_constants.h",
     "host_scan_scheduler.cc",
     "host_scan_scheduler.h",
     "host_scanner.cc",
     "host_scanner.h",
     "initializer.cc",
     "initializer.h",
     "local_device_data_provider.cc",
     "local_device_data_provider.h",
   ]
 
@@ skipping 37 matching lines @@
     ":test_support",
     ":tether",
     "//base/test:test_support",
     "//chromeos",
     "//components/cryptauth",
     "//components/cryptauth:test_support",
     "//testing/gmock",
     "//testing/gtest",
   ]
 }