Minor improvements to VideoProcessorIntegrationTest.

webrtc/modules/video_coding/codecs/test/videoprocessor.cc

Index: webrtc/modules/video_coding/codecs/test/videoprocessor.cc
diff --git a/webrtc/modules/video_coding/codecs/test/videoprocessor.cc b/webrtc/modules/video_coding/codecs/test/videoprocessor.cc
index ba7a3403ab8bc623e9ac5d26066f029afa3ac48b..81e0488407b43ed678161feadbf3c4bbfe65b15b 100644
--- a/webrtc/modules/video_coding/codecs/test/videoprocessor.cc
+++ b/webrtc/modules/video_coding/codecs/test/videoprocessor.cc
@@ -138,10 +138,7 @@ VideoProcessor::VideoProcessor(webrtc::VideoEncoder* encoder,
   frame_infos_.reserve(analysis_frame_reader->NumberOfFrames());
 }
 
-VideoProcessor::~VideoProcessor() {
-  encoder_->RegisterEncodeCompleteCallback(nullptr);
-  decoder_->RegisterDecodeCompleteCallback(nullptr);
-}
+VideoProcessor::~VideoProcessor() = default;
 
 void VideoProcessor::Init() {
   RTC_DCHECK(!initialized_) << "VideoProcessor already initialized.";
@@ -189,6 +186,16 @@ void VideoProcessor::Init() {
   }
 }
 
+void VideoProcessor::Release() {
+  encoder_->RegisterEncodeCompleteCallback(nullptr);
+  decoder_->RegisterDecodeCompleteCallback(nullptr);
+
+  RTC_CHECK_EQ(encoder_->Release(), WEBRTC_VIDEO_CODEC_OK);
+  RTC_CHECK_EQ(decoder_->Release(), WEBRTC_VIDEO_CODEC_OK);
+
+  initialized_ = false;
+}
+
 bool VideoProcessor::ProcessFrame(int frame_number) {
   RTC_DCHECK_GE(frame_number, 0);
   RTC_DCHECK_LE(frame_number, frame_infos_.size())