Avoiding check on reordering configs in ANA if there is no controller has scoring point.

webrtc/modules/audio_coding/audio_network_adaptor/controller_manager_unittest.cc

 /*
  *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 341 matching lines @@
   Controller::NetworkMetrics metrics;
 
   auto controllers = states.controller_manager->GetSortedControllers(metrics);
   CheckControllersOrder(
       controllers,
       std::vector<ControllerType>{
           ControllerType::FEC, ControllerType::CHANNEL, ControllerType::DTX,
           ControllerType::FRAME_LENGTH, ControllerType::BIT_RATE});
 }
 
+TEST(ControllerManagerTest, CreateCharPointFreeConfigAndCheckDefaultOrder) {
+  audio_network_adaptor::config::ControllerManager config;
+
+  // Following controllers have no characteristic points.
+  AddChannelControllerConfig(&config);
+  AddDtxControllerConfig(&config);
+  AddBitrateControllerConfig(&config);
+
+  ProtoString config_string;
+  config.SerializeToString(&config_string);
+
+  auto states = CreateControllerManager(config_string);
+  Controller::NetworkMetrics metrics;
+
+  auto controllers = states.controller_manager->GetSortedControllers(metrics);
+  CheckControllersOrder(
+      controllers,
+      std::vector<ControllerType>{ControllerType::CHANNEL, ControllerType::DTX,
+                                  ControllerType::BIT_RATE});
+}
+
 TEST(ControllerManagerTest, CreateFromConfigStringAndCheckReordering) {
   rtc::ScopedFakeClock fake_clock;
   audio_network_adaptor::config::ControllerManager config;
   config.set_min_reordering_time_ms(kMinReorderingTimeMs);
   config.set_min_reordering_squared_distance(kMinReorderingSquareDistance);
 
   AddChannelControllerConfig(&config);
 
   // Internally associated with characteristic point 0.
   AddFecControllerConfig(&config);
@@ skipping 42 matching lines @@
   // Reorder now.
   CheckControllersOrder(controllers,
                         std::vector<ControllerType>{
                             ControllerType::FRAME_LENGTH, ControllerType::FEC,
                             ControllerType::CHANNEL, ControllerType::DTX,
                             ControllerType::BIT_RATE});
 }
 #endif  // WEBRTC_AUDIO_NETWORK_ADAPTOR_DEBUG_DUMP
 
 }  // namespace webrtc