Revert of Default build flag |rtc_use_h264| to |proprietary_codecs| if not on Android/iOS. (patchset #1 id:1 of https://codereview.webrtc.org/1660403004/ )

Reason for revert:
Trybots red? Don't have time to intvestigate

Original issue's description:
> Default build flag |rtc_use_h264| to |proprietary_codecs|
> if not on Android/iOS.
>
> This means proprietary_codecs=1 && ffmpeg_branding=Chrome
> can be used to enable this H.264 enc/dec implementation
> instead of rtc_use_h264=1 && ffmpeg_branding=Chrome.
> This is used by both Chromium trybots (but not default
> Chromium build) and offical Chrome build, meaning we will
> be able to test and enable H.264 in chromium.
>
> This change would otherwise be enough to launch this
> feature in Chrome, but because we do not want to do that
> before we have chromium browser tests and are ready to flip
> the switch, this CL prevents chromium from using H.264 just
> yet: https://codereview.chromium.org/1641163002/ (landing
> this after that CL).
>
> BUG=chromium:500605, chromium:468365
>
> Committed: https://crrev.com/7cd94f66ebfe5bf808d7dcb8da069d35f4a2b31a
> Cr-Commit-Position: refs/heads/master@{#11506}

TBR=kjellander@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:500605, chromium:468365

Review URL: https://codereview.webrtc.org/1677623002

Cr-Commit-Position: refs/heads/master@{#11508}
2 files changed
tree: b4357011ee9fb4e218bd7e91bdd28fdf9ae8492d
  1. build_overrides/
  2. chromium/
  3. data/
  4. infra/
  5. resources/
  6. talk/
  7. third_party/
  8. tools/
  9. webrtc/
  10. .clang-format
  11. .gitignore
  12. .gn
  13. all.gyp
  14. AUTHORS
  15. BUILD.gn
  16. check_root_dir.py
  17. codereview.settings
  18. COPYING
  19. DEPS
  20. LICENSE
  21. license_template.txt
  22. LICENSE_THIRD_PARTY
  23. OWNERS
  24. PATENTS
  25. PRESUBMIT.py
  26. pylintrc
  27. README.md
  28. setup_links.py
  29. sync_chromium.py
  30. 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.

More info