The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/b825a4218938f22c9e685dabfff64b0957d3e420

commit b825a4218938f22c9e685dabfff64b0957d3e420
Author: Mohamad Ahmadi <mahmadi@chromium.org>
Date: Fri Feb 16 02:30:13 2018

Enables chrome://ukm in iOS

Bug:  809507 
Cq-Include-Trybots: master.tryserver.chromium.mac:ios-simulator-cronet;master.tryserver.chromium.mac:ios-simulator-full-configs
Change-Id: I584f0412c197f24236b5402f97d9000a9bf92d66
Reviewed-on: https://chromium-review.googlesource.com/916707
Reviewed-by: Robert Kaplow <rkaplow@chromium.org>
Reviewed-by: Peter Lee <pkl@chromium.org>
Commit-Queue: Moe Ahmadi <mahmadi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#537112}
[modify] https://crrev.com/b825a4218938f22c9e685dabfff64b0957d3e420/chrome/browser/BUILD.gn
[modify] https://crrev.com/b825a4218938f22c9e685dabfff64b0957d3e420/chrome/browser/metrics/chrome_metrics_service_client.cc
[rename] https://crrev.com/b825a4218938f22c9e685dabfff64b0957d3e420/components/ukm/content/debug_page/BUILD.gn
[add] https://crrev.com/b825a4218938f22c9e685dabfff64b0957d3e420/components/ukm/content/debug_page/debug_page.cc
[rename] https://crrev.com/b825a4218938f22c9e685dabfff64b0957d3e420/components/ukm/content/debug_page/debug_page.h
[add] https://crrev.com/b825a4218938f22c9e685dabfff64b0957d3e420/components/ukm/debug/BUILD.gn
[rename] https://crrev.com/b825a4218938f22c9e685dabfff64b0957d3e420/components/ukm/debug/ukm_debug_data_extractor.cc
[add] https://crrev.com/b825a4218938f22c9e685dabfff64b0957d3e420/components/ukm/debug/ukm_debug_data_extractor.h
[delete] https://crrev.com/8e5f0d8f579f9d32d72748630a55725e5835a1d7/components/ukm/debug_page/DEPS
[modify] https://crrev.com/b825a4218938f22c9e685dabfff64b0957d3e420/components/ukm/ukm_recorder_impl.h
[modify] https://crrev.com/b825a4218938f22c9e685dabfff64b0957d3e420/components/ukm/ukm_service.h
[modify] https://crrev.com/b825a4218938f22c9e685dabfff64b0957d3e420/ios/chrome/browser/chrome_url_constants.cc
[modify] https://crrev.com/b825a4218938f22c9e685dabfff64b0957d3e420/ios/chrome/browser/chrome_url_constants.h
[modify] https://crrev.com/b825a4218938f22c9e685dabfff64b0957d3e420/ios/chrome/browser/ui/webui/BUILD.gn
[modify] https://crrev.com/b825a4218938f22c9e685dabfff64b0957d3e420/ios/chrome/browser/ui/webui/chrome_web_ui_ios_controller_factory.mm
[add] https://crrev.com/b825a4218938f22c9e685dabfff64b0957d3e420/ios/chrome/browser/ui/webui/url_keyed_metrics_ui.cc
[add] https://crrev.com/b825a4218938f22c9e685dabfff64b0957d3e420/ios/chrome/browser/ui/webui/url_keyed_metrics_ui.h