[PCLF] Fix ExampleVideoQualityAnalyzer to not use VideoFrame::kNotSetId as frame id

Bug: b/240540204
Change-Id: I7d529f22c93e529a26787dd4c0b5448ad27bb644
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/280382
Commit-Queue: Artem Titov <titovartem@webrtc.org>
Auto-Submit: Artem Titov <titovartem@webrtc.org>
Commit-Queue: Andrey Logvin <landrey@google.com>
Reviewed-by: Andrey Logvin <landrey@google.com>
Cr-Commit-Position: refs/heads/main@{#38466}

test/pc/e2e/analyzer/video/example_video_quality_analyzer.cc

diff --git a/test/pc/e2e/analyzer/video/example_video_quality_analyzer.cc b/test/pc/e2e/analyzer/video/example_video_quality_analyzer.cc
index f7d4550..da9c53b 100644
--- a/test/pc/e2e/analyzer/video/example_video_quality_analyzer.cc
+++ b/test/pc/e2e/analyzer/video/example_video_quality_analyzer.cc
@@ -29,6 +29,9 @@
     const webrtc::VideoFrame& frame) {
   MutexLock lock(&lock_);
   uint16_t frame_id = next_frame_id_++;
+  if (frame_id == VideoFrame::kNotSetId) {
+    frame_id = next_frame_id_++;
+  }
   auto it = frames_in_flight_.find(frame_id);
   if (it == frames_in_flight_.end()) {
     frames_in_flight_.insert(frame_id);

test/pc/e2e/analyzer/video/example_video_quality_analyzer.h

diff --git a/test/pc/e2e/analyzer/video/example_video_quality_analyzer.h b/test/pc/e2e/analyzer/video/example_video_quality_analyzer.h
index b12c11b..af4868a 100644
--- a/test/pc/e2e/analyzer/video/example_video_quality_analyzer.h
+++ b/test/pc/e2e/analyzer/video/example_video_quality_analyzer.h
@@ -86,7 +86,7 @@
   // process frame id overlap.
   std::set<uint16_t> frames_in_flight_ RTC_GUARDED_BY(lock_);
   std::map<uint16_t, std::string> frames_to_stream_label_ RTC_GUARDED_BY(lock_);
-  uint16_t next_frame_id_ RTC_GUARDED_BY(lock_) = 0;
+  uint16_t next_frame_id_ RTC_GUARDED_BY(lock_) = 1;
   uint64_t frames_captured_ RTC_GUARDED_BY(lock_) = 0;
   uint64_t frames_pre_encoded_ RTC_GUARDED_BY(lock_) = 0;
   uint64_t frames_encoded_ RTC_GUARDED_BY(lock_) = 0;