The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/653ff53afd11cbee11d36aaa44e84f94611a06c2

commit 653ff53afd11cbee11d36aaa44e84f94611a06c2
Author: Charles Harrison <csharrison@chromium.org>
Date: Tue Aug 01 14:14:05 2017

[subresource_filter] Add UI Shown RAPPOR metric

Bug:  750443 
Change-Id: I51112bceff4ef11cca3ffdb781cef068ffb5f6fe
Reviewed-on: https://chromium-review.googlesource.com/592907
Reviewed-by: Steven Holte <holte@chromium.org>
Commit-Queue: Charlie Harrison <csharrison@chromium.org>
Cr-Commit-Position: refs/heads/master@{#490986}
[modify] https://crrev.com/653ff53afd11cbee11d36aaa44e84f94611a06c2/chrome/browser/subresource_filter/chrome_subresource_filter_client.cc
[modify] https://crrev.com/653ff53afd11cbee11d36aaa44e84f94611a06c2/chrome/browser/subresource_filter/subresource_filter_unittest.cc
[modify] https://crrev.com/653ff53afd11cbee11d36aaa44e84f94611a06c2/tools/metrics/rappor/rappor.xml