The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/b04bf69ea958add88d418420802b2188cb099217

commit b04bf69ea958add88d418420802b2188cb099217
Author: peterlaurens <peterlaurens@chromium.org>
Date: Fri May 19 21:06:03 2017

Adding tools menu responsiveness metric.

BUG= 723910 

Review-Url: https://codereview.chromium.org/2894513002
Cr-Commit-Position: refs/heads/master@{#473314}

[modify] https://crrev.com/b04bf69ea958add88d418420802b2188cb099217/ios/chrome/browser/ui/browser_view_controller.mm
[modify] https://crrev.com/b04bf69ea958add88d418420802b2188cb099217/ios/chrome/browser/ui/toolbar/toolbar_controller.h
[modify] https://crrev.com/b04bf69ea958add88d418420802b2188cb099217/ios/chrome/browser/ui/tools_menu/tools_menu_view_controller.mm
[modify] https://crrev.com/b04bf69ea958add88d418420802b2188cb099217/ios/shared/chrome/browser/ui/tools_menu/tools_menu_configuration.h
[modify] https://crrev.com/b04bf69ea958add88d418420802b2188cb099217/ios/shared/chrome/browser/ui/tools_menu/tools_menu_configuration.mm
[modify] https://crrev.com/b04bf69ea958add88d418420802b2188cb099217/tools/metrics/histograms/histograms.xml