Cleanup webrtc:: namespace from leaked TimingFrameFlags

Bug: webrtc:9351
Change-Id: Ifbc0a522bf13ab62a2e490b9f129eacfabe7796f
Reviewed-on: https://webrtc-review.googlesource.com/80961
Commit-Queue: Ilya Nikolaevskiy <ilnik@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#23520}
diff --git a/sdk/objc/Framework/Classes/VideoToolbox/RTCVideoEncoderH264.mm b/sdk/objc/Framework/Classes/VideoToolbox/RTCVideoEncoderH264.mm
index d9b103c..66e9b61 100644
--- a/sdk/objc/Framework/Classes/VideoToolbox/RTCVideoEncoderH264.mm
+++ b/sdk/objc/Framework/Classes/VideoToolbox/RTCVideoEncoderH264.mm
@@ -739,7 +739,7 @@
   frame.rotation = rotation;
   frame.contentType = (_mode == RTCVideoCodecModeScreensharing) ? RTCVideoContentTypeScreenshare :
                                                                   RTCVideoContentTypeUnspecified;
-  frame.flags = webrtc::TimingFrameFlags::kInvalid;
+  frame.flags = webrtc::VideoSendTiming::kInvalid;
 
   int qp;
   _h264BitstreamParser.ParseBitstream(buffer->data(), buffer->size());