365aebdade
It was only assigned at construction, and this improves consistency with remote_estimator_proxy_. The declaration of the private WrappingBitrateEstimator had to be moved to the header file, and it was also converted from system_wrappers' CriticalSectionWrapper to rtc::CriticalSection. BUG=webrtc:6847 Review-Url: https://codereview.webrtc.org/2642363003 Cr-Commit-Position: refs/heads/master@{#16236}