tree a321a86b4c92d37e7047b9949cfbaa7835c3d30a
parent 4b15d9a7f165100f784642416b0750ebdf50c42c
author sprang <sprang@webrtc.org> 1485439946 -0800
committer Commit bot <commit-bot@chromium.org> 1485439946 +0000

Reland of Add experimental simulcast screen content mode

The original CL was reverted because of a bug discovered by the
chromium bots. Description of that CL:

> Review-Url: https://codereview.webrtc.org/2636443002
> Cr-Commit-Position: refs/heads/master@{#16135}
> Committed: https://chromium.googlesource.com/external/webrtc/+/a28e971e3bc8a06f366f0ef82cc7168b05a83b59

The first patch set of this CL is the same as r16135.
Subsequence patch sets are the fixes applied.
Some new test cases have been added, which reveal a few more bugs that
have also been fixed.

BUG=webrtc:4172

Review-Url: https://codereview.webrtc.org/2641133002
Cr-Commit-Position: refs/heads/master@{#16299}