In more detail, all of our RecordHistogram* have been superseded by UmaHistogram* functions in histogram_functions.h.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/15080f7bd23300cfba06cb9558923296a1b30f72

commit 15080f7bd23300cfba06cb9558923296a1b30f72
Author: mattcary <mattcary@chromium.org>
Date: Mon Jan 23 15:20:08 2017

Prerender: update historgram utility functions.

No functional change.

BUG= 677257 

Review-Url: https://codereview.chromium.org/2653463005
Cr-Commit-Position: refs/heads/master@{#445376}

[modify] https://crrev.com/15080f7bd23300cfba06cb9558923296a1b30f72/chrome/browser/prerender/prerender_histograms.cc