The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/96ddc04658f89e0eb9666157ffa6777f16f87686

commit 96ddc04658f89e0eb9666157ffa6777f16f87686
Author: Charlie Harrison <csharrison@chromium.org>
Date: Wed Apr 11 13:59:45 2018

[page-load-metrics] Refactor OnSubFrameTimingChanged

This CL should not change behavior.

Bug: 829992
Change-Id: I29ab5dd2702b32e160b04bd341183d36fefe1bc9
Reviewed-on: https://chromium-review.googlesource.com/999995
Commit-Queue: Charlie Harrison <csharrison@chromium.org>
Reviewed-by: Bryan McQuade <bmcquade@chromium.org>
Cr-Commit-Position: refs/heads/master@{#549876}
[modify] https://crrev.com/96ddc04658f89e0eb9666157ffa6777f16f87686/chrome/browser/page_load_metrics/metrics_web_contents_observer_unittest.cc
[modify] https://crrev.com/96ddc04658f89e0eb9666157ffa6777f16f87686/chrome/browser/page_load_metrics/page_load_metrics_browsertest.cc
[modify] https://crrev.com/96ddc04658f89e0eb9666157ffa6777f16f87686/chrome/browser/page_load_metrics/page_load_metrics_observer.h
[modify] https://crrev.com/96ddc04658f89e0eb9666157ffa6777f16f87686/chrome/browser/page_load_metrics/page_load_metrics_update_dispatcher.cc
[modify] https://crrev.com/96ddc04658f89e0eb9666157ffa6777f16f87686/chrome/browser/page_load_metrics/page_load_metrics_update_dispatcher.h
[modify] https://crrev.com/96ddc04658f89e0eb9666157ffa6777f16f87686/chrome/browser/page_load_metrics/page_load_tracker.cc
[modify] https://crrev.com/96ddc04658f89e0eb9666157ffa6777f16f87686/chrome/browser/page_load_metrics/page_load_tracker.h