APM runtime setting: fix kPlayoutVolumeChange not dispatched

Bug: webrtc:10608
Change-Id: Ied2e8db1f9914217c6001e0da79c19e2b414056d
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/159560
Reviewed-by: Gustaf Ullberg <gustaf@webrtc.org>
Commit-Queue: Alessio Bazzica <alessiob@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#29755}
diff --git a/modules/audio_processing/audio_processing_impl.cc b/modules/audio_processing/audio_processing_impl.cc
index 9a0ce88..59d0c32 100644
--- a/modules/audio_processing/audio_processing_impl.cc
+++ b/modules/audio_processing/audio_processing_impl.cc
@@ -970,6 +970,7 @@
     }
     switch (setting.type()) {
       case RuntimeSetting::Type::kPlayoutAudioDeviceChange:  // fall-through
+      case RuntimeSetting::Type::kPlayoutVolumeChange:       // fall-through
       case RuntimeSetting::Type::kCustomRenderProcessingRuntimeSetting:
         if (submodules_.render_pre_processor) {
           submodules_.render_pre_processor->SetRuntimeSetting(setting);
@@ -978,7 +979,6 @@
       case RuntimeSetting::Type::kCapturePreGain:          // fall-through
       case RuntimeSetting::Type::kCaptureCompressionGain:  // fall-through
       case RuntimeSetting::Type::kCaptureFixedPostGain:    // fall-through
-      case RuntimeSetting::Type::kPlayoutVolumeChange:     // fall-through
       case RuntimeSetting::Type::kNotSpecified:
         RTC_NOTREACHED();
         break;