Fixed flaky VideoSendStreamTest::SupportsAbsoluteSendTime

This test failed on the memcheck bot:
https://build.chromium.org/p/client.webrtc/builders/Linux%20Memcheck/builds/6704/steps/video_engine_tests/logs/stdio

The test assumed that the absolute send time header extension can never
be zero. It's a timestamp truncated to 24 bits, and zero is not a
special value - so it can very rarely end up being precisely zero.

The fix makes the test wait for at least one packet having a non-zero send time.

I've considered changing the test to use a fake clock instead to ensure
that not only the value is non-zero, but that it indeed reflects the
system timestamp - but that involves changing a very large number of
files. Besides, other tests in this file don't verify values for header
extensions where zeroes are allowed.

NOTRY=true

Review-Url: https://codereview.webrtc.org/2307693002
Cr-Commit-Position: refs/heads/master@{#14056}
1 file changed
tree: c21f833abfd6f766411d7fd074d9c9aa1f2aa0fc
  1. build_overrides/
  2. chromium/
  3. data/
  4. infra/
  5. resources/
  6. third_party/
  7. tools/
  8. webrtc/
  9. .clang-format
  10. .gitignore
  11. .gn
  12. all.gyp
  13. AUTHORS
  14. BUILD.gn
  15. check_root_dir.py
  16. codereview.settings
  17. DEPS
  18. LICENSE
  19. license_template.txt
  20. LICENSE_THIRD_PARTY
  21. OWNERS
  22. PATENTS
  23. PRESUBMIT.py
  24. pylintrc
  25. README.md
  26. setup_links.py
  27. sync_chromium.py
  28. WATCHLISTS
README.md

WebRTC is a free, open software project that provides browsers and mobile applications with Real-Time Communications (RTC) capabilities via simple APIs. The WebRTC components have been optimized to best serve this purpose.

Our mission: To enable rich, high-quality RTC applications to be developed for the browser, mobile platforms, and IoT devices, and allow them all to communicate via a common set of protocols.

The WebRTC initiative is a project supported by Google, Mozilla and Opera, amongst others. This page is maintained by the Google Chrome team.

Development

See http://www.webrtc.org/native-code/development for instructions on how to get started developing with the native code.

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