Suspecting:

Author: rdevlin.cronin
Project: chromium
Changelist: https://chromium.googlesource.com/chromium/src//+/af64c8cb4de48a580b04fe266e6f6a0c4c14e4d1
Time: Tue Jun 21 00:16:00 2016
The CL last changed line 30 of file settings_api_bubble_helpers.cc, which is stack frame 0.

@rdevlin.cronin: Could you please look into this issue.

Thank you.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/8996565733bc75e7a029e8b8d4612e2b013e63d2

commit 8996565733bc75e7a029e8b8d4612e2b013e63d2
Author: rdevlin.cronin <rdevlin.cronin@chromium.org>
Date: Thu Jul 28 15:44:36 2016

[Extensions UI] Check for a browser not being found

chrome::FindBrowserWithWebContents() can return null in some cases.
Guard against it in showing the warning bubble.

BUG= 631362 

Review-Url: https://codereview.chromium.org/2191713003
Cr-Commit-Position: refs/heads/master@{#408403}

[modify] https://crrev.com/8996565733bc75e7a029e8b8d4612e2b013e63d2/chrome/browser/ui/extensions/settings_api_bubble_helpers.cc

I think this should be fixed by #2.  meacer@, do you know if there's a way to have clusterfuzz rerun the test case?  Since this particular one involves a bunch of gestures, it's hard to repro locally.

I think the "Redo" button at the top does that. I clicked it and it seems to be updating with a "Pending" message.

I noticed that, but wasn't sure of the value to pick.  I'm assuming maybe "fixed" checks if it's fixed?  (I wanted to be sure to not accidentally force it to mark as fixed.)

I clicked all of them, but not sure either :)

+Marty for the clusterfuzz question

If you checked the "Fixed" box under redo it would re-run fixed testing. CF also seems to be having trouble reproducing this, probably because of gesture timing.

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