The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/e44369448261419613589f7a19f1bd1fa4481786

commit e44369448261419613589f7a19f1bd1fa4481786
Author: Shakti Sahu <shaktisahu@chromium.org>
Date: Wed May 23 04:52:36 2018

Download InfoBar : Added UMA

Bug:  844202 
Change-Id: Ia827e40ad50eeb057d2f9c3b2f328a0d75b7487d
Reviewed-on: https://chromium-review.googlesource.com/1064795
Commit-Queue: Shakti Sahu <shaktisahu@chromium.org>
Reviewed-by: Ilya Sherman <isherman@chromium.org>
Reviewed-by: David Trainor <dtrainor@chromium.org>
Cr-Commit-Position: refs/heads/master@{#560946}
[modify] https://crrev.com/e44369448261419613589f7a19f1bd1fa4481786/chrome/android/java/src/org/chromium/chrome/browser/download/DownloadInfoBarController.java
[modify] https://crrev.com/e44369448261419613589f7a19f1bd1fa4481786/tools/metrics/actions/actions.xml
[modify] https://crrev.com/e44369448261419613589f7a19f1bd1fa4481786/tools/metrics/histograms/enums.xml
[modify] https://crrev.com/e44369448261419613589f7a19f1bd1fa4481786/tools/metrics/histograms/histograms.xml