This removes a confusing name collision between webrtc::RateLimiter and rtc::RateLimiter where the header file names were separated only by an underscore. Bug: None Change-Id: Ifcf0a4e62b2bf3bd9057714d7c536f7609ad1b79 Reviewed-on: https://webrtc-review.googlesource.com/58741 Commit-Queue: Sebastian Jansson <srte@webrtc.org> Reviewed-by: Karl Wiberg <kwiberg@webrtc.org> Cr-Commit-Position: refs/heads/master@{#22237}