Reland of Activate 'offload debug dump recordings from audio thread to TaskQueue'.

webrtc/media/BUILD.gn

Index: webrtc/media/BUILD.gn
diff --git a/webrtc/media/BUILD.gn b/webrtc/media/BUILD.gn
index cc775984398c50f7ab14e399d9f024923def7a90..d33b399d7c20eb1887ff4449de67032e48e195cf 100644
--- a/webrtc/media/BUILD.gn
+++ b/webrtc/media/BUILD.gn
@@ -220,6 +220,11 @@
     public_configs += [ ":rtc_media_defines_config" ]
     deps += [ "../modules/video_capture:video_capture_internal_impl" ]
   }
+  if (rtc_enable_protobuf) {
+    deps += [ "../modules/audio_processing/aec_dump:aec_dump_impl" ]
+  } else {
+    deps += [ "../modules/audio_processing/aec_dump:null_aec_dump_factory" ]
+  }
   deps += [
     ":rtc_media_base",
     "..:webrtc_common",
@@ -237,6 +242,7 @@
     "../modules/audio_device:audio_device",
     "../modules/audio_mixer:audio_mixer_impl",
     "../modules/audio_processing:audio_processing",
+    "../modules/audio_processing/aec_dump",
     "../modules/video_capture:video_capture_module",
     "../modules/video_coding",
     "../modules/video_coding:webrtc_h264",