Reland of Delete cryptstring.h and cryptstring.cc. (patchset #1 id:1 of https://codereview.webrtc.org/2742743002/ )

Reason for revert:
CryptString usage is now deleted in Chrome, see cl https://codereview.chromium.org/2738973004/

Original issue's description:
> Revert of Delete cryptstring.h and cryptstring.cc. (patchset #1 id:1 of https://codereview.webrtc.org/2740633003/ )
>
> Reason for revert:
> It turns out cryptstring was used by Chrome. In the xmpp code recently moved there from webrtc.
>
> So this code has to be moved too, it canät just be deleted.
>
> Original issue's description:
> > Delete cryptstring.h and cryptstring.cc.
> >
> > They became unused with cl https://codereview.webrtc.org/2731673002/
> >
> > BUG=webrtc:6424
> >
> > Review-Url: https://codereview.webrtc.org/2740633003
> > Cr-Commit-Position: refs/heads/master@{#17128}
> > Committed: https://chromium.googlesource.com/external/webrtc/+/822638b48111800434d7d4be6fef2f27c4e6e451
>
> TBR=pthatcher@webrtc.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=webrtc:6424
>
> Review-Url: https://codereview.webrtc.org/2742743002
> Cr-Commit-Position: refs/heads/master@{#17130}
> Committed: https://chromium.googlesource.com/external/webrtc/+/d6652076011363ab329d5cc4643619e4728303c7

TBR=pthatcher@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:6424

Review-Url: https://codereview.webrtc.org/2745523004
Cr-Commit-Position: refs/heads/master@{#17160}
4 files changed
tree: 81623637e71db184dfd23ee0250c368406fdc2f2
  1. build_overrides/
  2. data/
  3. infra/
  4. resources/
  5. tools-webrtc/
  6. webrtc/
  7. .clang-format
  8. .git-blame-ignore-revs
  9. .gitignore
  10. .gn
  11. AUTHORS
  12. BUILD.gn
  13. check_root_dir.py
  14. cleanup_links.py
  15. codereview.settings
  16. DEPS
  17. LICENSE
  18. license_template.txt
  19. LICENSE_THIRD_PARTY
  20. OWNERS
  21. PATENTS
  22. PRESUBMIT.py
  23. pylintrc
  24. README.md
  25. 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