The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/eb24ee6ddf845f326802315fec6748f49e7e253d

commit eb24ee6ddf845f326802315fec6748f49e7e253d
Author: bmcquade <bmcquade@chromium.org>
Date: Tue Feb 28 23:30:40 2017

Add test-only constructor for PageLoadExtraInfo.

prerender_browsertest.cc wants to create fake PageLoadExtraInfos.
We have to make a change there every time we update the constructor.
This helper allows for construction of PLEIs using a minimal set of
parameters, in order to avoid the need to update
prerender_browsertest.cc in the future.

BUG= 697189 

Review-Url: https://codereview.chromium.org/2726673002
Cr-Commit-Position: refs/heads/master@{#453742}

[modify] https://crrev.com/eb24ee6ddf845f326802315fec6748f49e7e253d/chrome/browser/page_load_metrics/page_load_metrics_observer.cc
[modify] https://crrev.com/eb24ee6ddf845f326802315fec6748f49e7e253d/chrome/browser/page_load_metrics/page_load_metrics_observer.h
[modify] https://crrev.com/eb24ee6ddf845f326802315fec6748f49e7e253d/chrome/browser/prerender/prerender_browsertest.cc