[UMA] Fix misconfigured histogram suffix

A previous change to rename a histogram missed the suffix declaration.
This change changes the suffix to refer to the renamed histogram.

Bug: 842023
Change-Id: I97f0f8ae7e3cc48d4bfbb820ada67ec5088a0cdc
Reviewed-on: https://chromium-review.googlesource.com/1075514
Reviewed-by: Brian White <bcwhite@chromium.org>
Commit-Queue: Mohamed Heikal <mheikal@chromium.org>
Cr-Commit-Position: refs/heads/master@{#562457}
1 file changed