Revert "Reland "Remove unused APM voice activity detection sub-module""

This reverts commit 54d1344d985b00d4d1580dd18057d4618c11ad1f.

Reason for revert: Breaks chromium roll, see 
https://ci.chromium.org/ui/p/chromium/builders/try/linux_chromium_tsan_rel_ng/1080583/overview

https://chromium-review.googlesource.com/c/chromium/src/+/3461512

Original change's description:
> Reland "Remove unused APM voice activity detection sub-module"
>
> This reverts commit a751f167c68343f76528436defdbc61600a8d7b3.
>
> Reason for revert: dependency in a downstream project removed
>
> Original change's description:
> > Revert "Remove unused APM voice activity detection sub-module"
> >
> > This reverts commit b4e06d032e6f82a65c52ed0c5364ae9e7c0a0215.
> >
> > Reason for revert: breaking downstream projects
> >
> > Original change's description:
> > > Remove unused APM voice activity detection sub-module
> > >
> > > API changes:
> > > - webrtc::AudioProcessing::Config::VoiceDetection removed
> > > - webrtc::AudioProcessingStats::voice_detected deprecated
> > > - cricket::AudioOptions::typing_detection deprecated
> > > - webrtc::StatsReport::StatsValueName::
> > >   kStatsValueNameTypingNoiseState deprecated
> > >
> > > PSA: https://groups.google.com/g/discuss-webrtc/c/7X6uwmJarE0
> > >
> > > Bug: webrtc:11226,webrtc:11292
> > > Change-Id: I8d008b56708cf62961b9857ec052b59fda3b41bf
> > > Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/250666
> > > Reviewed-by: Harald Alvestrand <hta@webrtc.org>
> > > Reviewed-by: Gustaf Ullberg <gustaf@webrtc.org>
> > > Reviewed-by: Sam Zackrisson <saza@webrtc.org>
> > > Reviewed-by: Björn Terelius <terelius@webrtc.org>
> > > Commit-Queue: Alessio Bazzica <alessiob@webrtc.org>
> > > Cr-Commit-Position: refs/heads/main@{#35975}
> >
> > TBR=gustaf@webrtc.org,saza@webrtc.org,alessiob@webrtc.org,terelius@webrtc.org,hta@webrtc.org,webrtc-scoped@luci-project-accounts.iam.gserviceaccount.com
> >
> > Change-Id: Iee01fdb874b4e0331277f3ffe60dacaabc3859a2
> > No-Presubmit: true
> > No-Tree-Checks: true
> > No-Try: true
> > Bug: webrtc:11226,webrtc:11292
> > Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/251600
> > Reviewed-by: Harald Alvestrand <hta@webrtc.org>
> > Reviewed-by: Gustaf Ullberg <gustaf@webrtc.org>
> > Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
> > Cr-Commit-Position: refs/heads/main@{#35977}
>
> # Not skipping CQ checks because this is a reland.
>
> Bug: webrtc:11226,webrtc:11292
> Change-Id: I2fcbc5fdade16bfe6a0f0a02841a33a598d4f2ad
> Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/251660
> Reviewed-by: Alessio Bazzica <alessiob@webrtc.org>
> Reviewed-by: Harald Alvestrand <hta@webrtc.org>
> Commit-Queue: Alessio Bazzica <alessiob@webrtc.org>
> Cr-Commit-Position: refs/heads/main@{#35984}

TBR=mbonadei@webrtc.org,gustaf@webrtc.org,saza@webrtc.org,alessiob@webrtc.org,terelius@webrtc.org,hta@webrtc.org,webrtc-scoped@luci-project-accounts.iam.gserviceaccount.com

Change-Id: Ib308a3af2dcce85a0074ef5a4680ccec3f82712f
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: webrtc:11226,webrtc:11292
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/251688
Reviewed-by: Henrik Boström <hbos@webrtc.org>
Bot-Commit: rubber-stamper@appspot.gserviceaccount.com <rubber-stamper@appspot.gserviceaccount.com>
Auto-Submit: Henrik Boström <hbos@webrtc.org>
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Commit-Queue: Harald Alvestrand <hta@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#35990}
diff --git a/modules/audio_processing/audio_processing_impl.cc b/modules/audio_processing/audio_processing_impl.cc
index 9a1aaee..8810efe 100644
--- a/modules/audio_processing/audio_processing_impl.cc
+++ b/modules/audio_processing/audio_processing_impl.cc
@@ -141,6 +141,7 @@
     bool gain_controller2_enabled,
     bool gain_adjustment_enabled,
     bool echo_controller_enabled,
+    bool voice_detector_enabled,
     bool transient_suppressor_enabled) {
   bool changed = false;
   changed |= (high_pass_filter_enabled != high_pass_filter_enabled_);
@@ -152,6 +153,7 @@
   changed |= (gain_controller2_enabled != gain_controller2_enabled_);
   changed |= (gain_adjustment_enabled != gain_adjustment_enabled_);
   changed |= (echo_controller_enabled != echo_controller_enabled_);
+  changed |= (voice_detector_enabled != voice_detector_enabled_);
   changed |= (transient_suppressor_enabled != transient_suppressor_enabled_);
   if (changed) {
     high_pass_filter_enabled_ = high_pass_filter_enabled;
@@ -161,6 +163,7 @@
     gain_controller2_enabled_ = gain_controller2_enabled;
     gain_adjustment_enabled_ = gain_adjustment_enabled;
     echo_controller_enabled_ = echo_controller_enabled;
+    voice_detector_enabled_ = voice_detector_enabled;
     transient_suppressor_enabled_ = transient_suppressor_enabled;
   }
 
@@ -171,7 +174,7 @@
 
 bool AudioProcessingImpl::SubmoduleStates::CaptureMultiBandSubModulesActive()
     const {
-  return CaptureMultiBandProcessingPresent();
+  return CaptureMultiBandProcessingPresent() || voice_detector_enabled_;
 }
 
 bool AudioProcessingImpl::SubmoduleStates::CaptureMultiBandProcessingPresent()
@@ -368,6 +371,7 @@
   InitializeGainController1();
   InitializeTransientSuppressor();
   InitializeHighPassFilter(true);
+  InitializeVoiceDetector();
   InitializeResidualEchoDetector();
   InitializeEchoController();
   InitializeGainController2(/*config_has_changed=*/true);
@@ -502,6 +506,9 @@
   const bool agc2_config_changed =
       config_.gain_controller2 != config.gain_controller2;
 
+  const bool voice_detection_config_changed =
+      config_.voice_detection.enabled != config.voice_detection.enabled;
+
   const bool ns_config_changed =
       config_.noise_suppression.enabled != config.noise_suppression.enabled ||
       config_.noise_suppression.level != config.noise_suppression.level;
@@ -550,6 +557,10 @@
     InitializeCaptureLevelsAdjuster();
   }
 
+  if (voice_detection_config_changed) {
+    InitializeVoiceDetector();
+  }
+
   // Reinitialization must happen after all submodule configuration to avoid
   // additional reinitializations on the next capture / render processing call.
   if (pipeline_config_changed) {
@@ -1204,6 +1215,13 @@
     }
   }
 
+  if (config_.voice_detection.enabled) {
+    capture_.stats.voice_detected =
+        submodules_.voice_detector->ProcessCaptureAudio(capture_buffer);
+  } else {
+    capture_.stats.voice_detected = absl::nullopt;
+  }
+
   if (submodules_.agc_manager) {
     submodules_.agc_manager->Process(capture_buffer);
 
@@ -1664,7 +1682,7 @@
       !!submodules_.gain_controller2,
       config_.pre_amplifier.enabled || config_.capture_level_adjustment.enabled,
       capture_nonlocked_.echo_controller_enabled,
-      !!submodules_.transient_suppressor);
+      config_.voice_detection.enabled, !!submodules_.transient_suppressor);
 }
 
 void AudioProcessingImpl::InitializeTransientSuppressor() {
@@ -1714,6 +1732,14 @@
   }
 }
 
+void AudioProcessingImpl::InitializeVoiceDetector() {
+  if (config_.voice_detection.enabled) {
+    submodules_.voice_detector = std::make_unique<VoiceDetection>(
+        proc_split_sample_rate_hz(), VoiceDetection::kVeryLowLikelihood);
+  } else {
+    submodules_.voice_detector.reset();
+  }
+}
 void AudioProcessingImpl::InitializeEchoController() {
   bool use_echo_controller =
       echo_control_factory_ ||