Add 120ms frame ability to ANA

webrtc/modules/audio_coding/audio_network_adaptor/frame_length_controller.h

Index: webrtc/modules/audio_coding/audio_network_adaptor/frame_length_controller.h
diff --git a/webrtc/modules/audio_coding/audio_network_adaptor/frame_length_controller.h b/webrtc/modules/audio_coding/audio_network_adaptor/frame_length_controller.h
index ba0c1c2ab2d09a2c76f568d9d925b2974f3ffefe..5f65772fbe225e17868c7043454055c0b33338f6 100644
--- a/webrtc/modules/audio_coding/audio_network_adaptor/frame_length_controller.h
+++ b/webrtc/modules/audio_coding/audio_network_adaptor/frame_length_controller.h
@@ -29,7 +29,9 @@ class FrameLengthController final : public Controller {
            float fl_increasing_packet_loss_fraction,
            float fl_decreasing_packet_loss_fraction,
            int fl_20ms_to_60ms_bandwidth_bps,
-           int fl_60ms_to_20ms_bandwidth_bps);
+           int fl_60ms_to_20ms_bandwidth_bps,
+           int fl_60ms_to_120ms_bandwidth_bps,
+           int fl_120ms_to_60ms_bandwidth_bps);
     Config(const Config& other);
     ~Config();
     std::vector<int> encoder_frame_lengths_ms;
@@ -43,6 +45,11 @@ class FrameLengthController final : public Controller {
     // Uplink bandwidth above which frame length should switch from 60ms to
     // 20ms.
     int fl_60ms_to_20ms_bandwidth_bps;
+    // Uplink bandwidth below which frame length can switch from 60ms to 120ms.
+    int fl_60ms_to_120ms_bandwidth_bps;
+    // Uplink bandwidth above which frame length should switch from 120ms to
+    // 60ms.
+    int fl_120ms_to_60ms_bandwidth_bps;
   };
 
   explicit FrameLengthController(const Config& config);