d6eb71ef2c
A stub of sparse histogram factory getter is added so that Chromium can provide an implementation using base::SparseHistogram for the metrics macro RTC_HISTOGRAM_ENUMERATION_SPARSE. The default implementation in WebRTC reuses the non-sparse version. Bug: None Change-Id: Ia091ca7aaacb6baa92027cd99d821bbc8da8d780 Reviewed-on: https://webrtc-review.googlesource.com/85740 Reviewed-by: Tommi <tommi@webrtc.org> Commit-Queue: Qingsi Wang <qingsi@google.com> Cr-Commit-Position: refs/heads/master@{#23750}