tree f23ed320d4a13a07868ff63c6b0bfeace446a60c
parent b46235c1ccb3d105a6a0f8944c32440c97cd27ce
author Gary Kacmarcik <garykac@chromium.org> 1547227759 -0800
committer Commit Bot <commit-bot@chromium.org> 1547241382 +0000

Set callback_ member at start of desktop capturer Start()

Some callback wrappers set the callback_ member at the start, but
most set it after calling any owned implementation of Start().

Setting it after the call means that the callback_ is not set up
for any callbacks that happen during the call.

This cl fixes that by setting the callback_ member before any
calls are made in Start().

Bug: chromium:916961
Change-Id: Id26f8cc98377ef217f928095834162f5526c1fdf
Reviewed-on: https://webrtc-review.googlesource.com/c/117040
Reviewed-by: Brave Yao <braveyao@webrtc.org>
Commit-Queue: Gary Kacmarcik <garykac@chromium.org>
Cr-Commit-Position: refs/heads/master@{#26231}