commit 7468905cf4b9704360e3556e3b54347ee6df77d9
author akaba <akaba@google.com> Mon Jul 23 23:47:40 2018
committer Commit Bot <commit-bot@chromium.org> Mon Jul 23 23:47:40 2018
tree 5d87ddba419ad896b1b6e3d647020f373b92d149
parent ed01860d1714474c5043f7dc9195193b8915634f

UMA for SurfaceManager

This CL adds the 3 following histograms:

1) logs the number of alive surfaces after each surface garbage
collection in Viz.

2) logs the number of temporary references after each surface garbage
collection in Viz.

3) logs the distance between a surface returned by SurfaceManager::GetLatestInFlightSurface
and the primary_surface_id passed in.

Bug: 866113
Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel
Change-Id: I644c5005ba1a0997956a75083f8b25bd8a5f5abc
Reviewed-on: https://chromium-review.googlesource.com/1142591
Commit-Queue: Andre Kaba <akaba@google.com>
Reviewed-by: Sadrul Chowdhury <sadrul@chromium.org>
Reviewed-by: Saman Sami <samans@chromium.org>
Reviewed-by: Alexei Svitkine <asvitkine@chromium.org>
Reviewed-by: Fady Samuel <fsamuel@chromium.org>
Cr-Commit-Position: refs/heads/master@{#577340}