Chrome Version: 64.0.3282.39 (Official Build) 685da0f069900495038d4dae4c1d7ac4bf489a47-refs/branch-heads/3282@{#286}

OS:Mac(10.12.6,10.13.2),Win(7,8,10),Linux(14.04 LTS) 

Test URL:https://chrome.google.com/webstore/detail/go-back-with-backspace/eekailopagacbcdloonjhbiecobagjci/reviews

Steps to reproduce:
1.Launch Chrome and navigate to chrome://flags.
2.Press tab key until focus reaches to last flag ,again press tab key and then press spacebar key
3.observe.

Actual Result:Unnecessary chrome browser get relaunch after pressing tab key on chrome://flags page.
Expected Result:Chrome browser should not relaunch after pressing tab key on chrome://flags page.

This is a regression issue, broken in M-63 series, Using the per-revision bisect providing the bisect results,

Good Build:63.0.3238.0
Bad Build:63.0.3239.0

You are probably looking for a change made after 508285 (known good), but no later than 508286 (first known bad).

CHANGELOG URL:

The script might not always return single CL as suspect as some perf builds might get missing due to failure.
  https://chromium.googlesource.com/chromium/src/+log/9d39e939e54ce0106cf0d36655faf7881062342e..0fc5451ac52eac5f141b72af906cb794baa1699b

Suspect:https://chromium.googlesource.com/chromium/src/+/0fc5451ac52eac5f141b72af906cb794baa1699b
edwardjung@:Kindly help to reassign, if your changes are not related to this issue.

 

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