Revert of quest keyframes more frequently on stream start/decoding error.

webrtc/modules/video_coding/video_receiver.cc

Index: webrtc/modules/video_coding/video_receiver.cc
diff --git a/webrtc/modules/video_coding/video_receiver.cc b/webrtc/modules/video_coding/video_receiver.cc
index de6764f9b54e1cd23522f6d5837bf0242420dbad..3d3e155dc3e1a6417cc5a255f5406603435a76a7 100644
--- a/webrtc/modules/video_coding/video_receiver.cc
+++ b/webrtc/modules/video_coding/video_receiver.cc
@@ -320,7 +320,24 @@
   if (decoder == nullptr) {
     return VCM_NO_CODEC_REGISTERED;
   }
-  return decoder->Decode(frame, clock_->TimeInMilliseconds());
+  // Decode a frame
+  int32_t ret = decoder->Decode(frame, clock_->TimeInMilliseconds());
+
+  // Check for failed decoding, run frame type request callback if needed.
+  bool request_key_frame = false;
+  if (ret < 0) {
+    request_key_frame = true;
+  }
+
+  if (!frame.Complete() || frame.MissingFrame()) {
+    request_key_frame = true;
+    ret = VCM_OK;
+  }
+  if (request_key_frame) {
+    rtc::CritScope cs(&process_crit_);
+    _scheduleKeyRequest = true;
+  }
+  return ret;
 }
 
 // Register possible receive codecs, can be called multiple times