Changed the channel unittest to use locking when reading/writing the
result variable. To do this, I had to move the result into the thread
object, which in turn required me to properly handle the lifetime of the
thread object, since it cannot disappear while we want to read the
result.
It is still possible to have the result being written to a local
variable, but it will only be updated as the thread object is
destroyed. It is used to for the implementation of
CallOnThreadAndWaitForDone. The old CallOnThread is gone and replaced by
ScopedCallThread instead.
BUG=webrtc:5524
Review URL: https://codereview.webrtc.org/1736763006
Cr-Commit-Position: refs/heads/master@{#12027}
This change allows the application to limit the bitrate of the outgoing
audio and video streams at runtime. The API roughly follows the WebRTC
API draft, defining the RTCRtpParameters structure witn exactly one
encoding (simulcast streams are not exposed in the API for now).
(https://www.w3.org/TR/webrtc/#idl-def-RTCRtpParameters)
BUG=
Review URL: https://codereview.webrtc.org/1788583004
Cr-Commit-Position: refs/heads/master@{#12025}
