This should use the new PLM page size for now until ChromeDataUseAscription is more robust.

Comment 1 reflects an end goal, but for now, the PLM approach should be sufficient.

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

Please prioritize and update the blocker and milestone accordingly.

If I don't land this for the branch this week, ideally we'd merge it in soon after (before the first week in February). The change will be small and well scoped.

Is this change applicable to any specific OS or All OSs?

A friendly reminder that M57 Beta launch is coming soon on February 2nd (in a week)! Your bug is labelled as Beta ReleaseBlock, pls make sure to land the fix and get it merged into the release branch (2987) ASAP so it gets enough baking time in Dev (before Beta promotion). Thank you!

Removing Release-BlockBeta as this is not Beta blocking. This has relatively low impact, but still might be merged once it lands.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/c19a210cab019968afc9e2a93f6c738030574d49

commit c19a210cab019968afc9e2a93f6c738030574d49
Author: ryansturm <ryansturm@chromium.org>
Date: Thu Jan 26 00:16:24 2017

Adding compressed bytes to DRP pingback

Compressed bytes represents the network bytes used for the page load.
This is accessible through page load metrics observer interface now.

BUG= 678061 

Review-Url: https://codereview.chromium.org/2615493002
Cr-Commit-Position: refs/heads/master@{#446169}

[modify] https://crrev.com/c19a210cab019968afc9e2a93f6c738030574d49/chrome/browser/page_load_metrics/observers/data_reduction_proxy_metrics_observer.cc
[modify] https://crrev.com/c19a210cab019968afc9e2a93f6c738030574d49/components/data_reduction_proxy/core/browser/data_reduction_proxy_pingback_client.cc
[modify] https://crrev.com/c19a210cab019968afc9e2a93f6c738030574d49/components/data_reduction_proxy/core/browser/data_reduction_proxy_pingback_client_unittest.cc
[modify] https://crrev.com/c19a210cab019968afc9e2a93f6c738030574d49/components/data_reduction_proxy/core/common/data_reduction_proxy_page_load_timing.cc
[modify] https://crrev.com/c19a210cab019968afc9e2a93f6c738030574d49/components/data_reduction_proxy/core/common/data_reduction_proxy_page_load_timing.h
[modify] https://crrev.com/c19a210cab019968afc9e2a93f6c738030574d49/components/data_reduction_proxy/proto/pageload_metrics.proto

Not merging this back; the UMA with this data isn't as promising as I like, so I will be taking a look at changing the underlying implementation in M58 to get better results.