[Cleanup] Rename UMA_HISTOGRAM_SPARSE_SLOWLY to base::UmaHistogramSparse().
This CL covers the final remaining uses, and removes the
UMA_HISTOGRAM_SPARSE_SLOWLY macro.
R=sky@chromium.org
Bug: 773850
Change-Id: I63ab5c9f2f17d554738099603d4c91332fc76aed
Reviewed-on: https://chromium-review.googlesource.com/830660
Commit-Queue: Ilya Sherman <isherman@chromium.org>
Reviewed-by: Egor Pasko <pasko@chromium.org>
Reviewed-by: Scott Violet <sky@chromium.org>
Cr-Commit-Position: refs/heads/master@{#527791}
CrOS-Libchrome-Original-Commit: 5ed1d19244d15c71c3079c9105b2c291dc91f1da
2 files changed