Reland of Made EglBase an abstract class and cleaned up. (patchset #1 id:1 of https://codereview.webrtc.org/1522073002/ )

Reason for revert:
Clients have been updated.

Original issue's description:
> Revert of Made EglBase an abstract class and cleaned up. (patchset #4 id:60001 of https://codereview.webrtc.org/1526463002/ )
>
> Reason for revert:
> Revert due breaking other clients.
>
> Original issue's description:
> > Made EglBase an abstract class and cleaned up.
> > Adds EglBase10 that implemenents EglBase for EGL 1.0
> >
> > BUG=webrtc:4993
> > TBR=glaznew@webrtc.org
> >
> > Committed: https://crrev.com/3207916f35ded33f586774e2c98d4d0089fe3c6e
> > Cr-Commit-Position: refs/heads/master@{#11011}
>
> TBR=magjed@webrtc.org
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=webrtc:4993
>
> Committed: https://crrev.com/e22e1cb399748112f308b488e7535754ef6b807d
> Cr-Commit-Position: refs/heads/master@{#11013}

TBR=magjed@webrtc.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:4993

Review URL: https://codereview.webrtc.org/1522303004

Cr-Commit-Position: refs/heads/master@{#11024}
10 files changed
tree: 72ce4c5fa7c0198a05e9dd5a79580929c9a0c489
  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