Reland of Optimize Android NV12 capture (patchset #1 id:1 of https://codereview.webrtc.org/2327893002/ )

Reason for revert:
Import breakage has been fixed.

Original issue's description:
> Revert of Optimize Android NV12 capture (patchset #2 id:20001 of https://codereview.webrtc.org/2317443003/ )
>
> Reason for revert:
> Import breakage in g3.
>
> Original issue's description:
> > Optimize Android NV12 capture
> >
> > This CL optimizes the Android capture NV12 -> I420 + scaling code. For
> > example, when the input is 1280x720 and we adapt to 640x360, this CL:
> >  - Reduces conversion time from 3.37 ms to 1.46 ms.
> >  - Reduces memory footprint by 1 MB.
> >
> > BUG=webrtc:6319
> >
> > Committed: https://crrev.com/36d38cbb153e19bdc3c62a750aba6889da40aac2
> > Cr-Commit-Position: refs/heads/master@{#14167}
>
> TBR=sakal@webrtc.org
> # Not skipping CQ checks because original CL landed more than 1 days ago.
> BUG=webrtc:6319
TBR=sakal@webrtc.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=webrtc:6319

Review-Url: https://codereview.webrtc.org/2332213011
Cr-Commit-Position: refs/heads/master@{#14273}
4 files changed
tree: cc8306bc4bf8da7ba9ed623f23f08ef2c4e93aa5
  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.

More info