Just to update, M-57 gets branched tomorrow and would probably go to Beta during 1st week of Feb.

Please adjust or update the blocker and milestone accordingly.

Thanks, this is in reviews, and can hopefully land before branch or merge back shortly after.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/485df9ed214f7924eaf8ed067070146e3d12aa58

commit 485df9ed214f7924eaf8ed067070146e3d12aa58
Author: ryansturm <ryansturm@chromium.org>
Date: Thu Jan 19 22:17:24 2017

Adding UMA for data reduction proxy page load size/savings

This Adds UMA to track bytes savings, percent savings, total requests,
percent requests throug the proxy, byte usage, etc.

This UMA will be compared against existing PLM data as well as sliced by
various experiments in data reduction proxy.

BUG= 682022 

Review-Url: https://codereview.chromium.org/2642553002
Cr-Commit-Position: refs/heads/master@{#444859}

[modify] https://crrev.com/485df9ed214f7924eaf8ed067070146e3d12aa58/chrome/browser/page_load_metrics/observers/data_reduction_proxy_metrics_observer.cc
[modify] https://crrev.com/485df9ed214f7924eaf8ed067070146e3d12aa58/chrome/browser/page_load_metrics/observers/data_reduction_proxy_metrics_observer.h
[modify] https://crrev.com/485df9ed214f7924eaf8ed067070146e3d12aa58/chrome/browser/page_load_metrics/observers/data_reduction_proxy_metrics_observer_unittest.cc
[modify] https://crrev.com/485df9ed214f7924eaf8ed067070146e3d12aa58/tools/metrics/histograms/histograms.xml

[Auto-generated comment by a script] We noticed that this issue is targeted for M-57; it appears the fix may have landed after branch point, meaning a merge might be required. Please confirm if a merge is required here - if so add Merge-Request-57 label, otherwise remove Merge-TBD label. Thanks.