Let `IvfVideoFrameGenerator` support AV1 codec

This CL adds dav1d decoder into `IvfVideoFrameGenerator` to support IVF
input with AV1 codec.

Bug: webrtc:15210
Change-Id: I4cbc93fa62fdc346f3c647bbf26f033bf0cc34ba
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/311340
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Commit-Queue: Jianhui J Dai <jianhui.j.dai@intel.com>
Cr-Commit-Position: refs/heads/main@{#40402}
diff --git a/test/BUILD.gn b/test/BUILD.gn
index 5187205..4107162 100644
--- a/test/BUILD.gn
+++ b/test/BUILD.gn
@@ -66,6 +66,7 @@
     "../modules/video_coding:webrtc_h264",
     "../modules/video_coding:webrtc_vp8",
     "../modules/video_coding:webrtc_vp9",
+    "../modules/video_coding/codecs/av1:dav1d_decoder",
     "../rtc_base:checks",
     "../rtc_base:criticalsection",
     "../rtc_base:logging",
diff --git a/test/testsupport/ivf_video_frame_generator.cc b/test/testsupport/ivf_video_frame_generator.cc
index ae87fb8..0c7504b 100644
--- a/test/testsupport/ivf_video_frame_generator.cc
+++ b/test/testsupport/ivf_video_frame_generator.cc
@@ -16,6 +16,7 @@
 #include "api/video/i420_buffer.h"
 #include "api/video_codecs/video_codec.h"
 #include "media/base/media_constants.h"
+#include "modules/video_coding/codecs/av1/dav1d_decoder.h"
 #include "modules/video_coding/codecs/h264/include/h264.h"
 #include "modules/video_coding/codecs/vp8/include/vp8.h"
 #include "modules/video_coding/codecs/vp9/include/vp9.h"
@@ -145,6 +146,9 @@
   if (codec_type == VideoCodecType::kVideoCodecH264) {
     return H264Decoder::Create();
   }
+  if (codec_type == VideoCodecType::kVideoCodecAV1) {
+    return CreateDav1dDecoder();
+  }
   return nullptr;
 }