tree 91f4994d5239a75305edca0f6873cdaa8fef439e
parent adaf22f8a8a4a3dadd252a2bef4e8fe7e7bbb969
author zhihuang <zhihuang@webrtc.org> 1504038233 -0700
committer Commit Bot <commit-bot@chromium.org> 1504038233 +0000

Fix the Chromium crash when creating an answer without a remote description.

Replacing the RTC_DCHECK with an if condition so that the method GetOptionsForAnswer
won't crash when there is no remote description. WebRtcSessionDescriptionFactory
will handle the null remote description.

TBR=deadbeef@webrtc.org
BUG=chromium:757830

Review-Url: https://codereview.webrtc.org/3006723002
Cr-Original-Commit-Position: refs/heads/master@{#19589}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: 141aacbf0b2df237e3e509ead278b770a2a04ad7