The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/9373f6486cb4c1d6f7a0f3260d4b5dbccec9a821

commit 9373f6486cb4c1d6f7a0f3260d4b5dbccec9a821
Author: jeffcarp <jeffcarp@chromium.org>
Date: Wed Feb 08 02:20:01 2017

[WPT Export] Add ability to pass GitHub creds as JSON file

Also rename --user and --token to --gh-user and --gh-token

BUG= 689295 

Review-Url: https://codereview.chromium.org/2685673002
Cr-Commit-Position: refs/heads/master@{#448861}

[modify] https://crrev.com/9373f6486cb4c1d6f7a0f3260d4b5dbccec9a821/third_party/WebKit/Tools/Scripts/wpt-export