Mark UI.CompositorResizeLock.* histograms obsolete.

CompositorResizeLock was deleted in https://crrev.com/c/1053588.
UI.CompositorResizeLock.* hasn't been recorded since then so mark as
obsolete.

Bug: 928497
Change-Id: Idcb1473864f9342d797942f1b749ae587c1b2213
Reviewed-on: https://chromium-review.googlesource.com/c/1454222
Reviewed-by: Brian White <bcwhite@chromium.org>
Commit-Queue: kylechar <kylechar@chromium.org>
Cr-Commit-Position: refs/heads/master@{#629981}
1 file changed