f24a06406a
This avoids the situation where an encoder, not supporting certain screen content settings, is created for a config where screencast is off, and later ReconfigureEncoder() is called updating the configuration but not the encoder instance, causing an inconsistency in the encoder's InitEncode() call. TBR=pthatcher@webrtc.org BUG=webrtc:4172 Review-Url: https://codereview.webrtc.org/2710493008 Cr-Commit-Position: refs/heads/master@{#16921}