The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/682a3df7a2c8046066f265956b9adcd900e9bbfe

commit 682a3df7a2c8046066f265956b9adcd900e9bbfe
Author: Mounir Lamouri <mlamouri@chromium.org>
Date: Mon Apr 23 16:09:00 2018

Media Controls: only eat keyboard inputs on popups when using them.

This allows shortcuts such as going to the dev tools to work while the
popup menus are visible.

Bug:  835615 
Change-Id: Ie09bbe679c1356249138cf45c1b24977f7895158
Reviewed-on: https://chromium-review.googlesource.com/1023596
Reviewed-by: Becca Hughes <beccahughes@chromium.org>
Commit-Queue: Mounir Lamouri <mlamouri@chromium.org>
Cr-Commit-Position: refs/heads/master@{#552719}
[modify] https://crrev.com/682a3df7a2c8046066f265956b9adcd900e9bbfe/third_party/blink/renderer/modules/media_controls/elements/media_control_popup_menu_element.cc

Your change meets the bar and is auto-approved for M67. Please go ahead and merge the CL to branch 3396 manually. Please contact milestone owner if you have questions.
Owners: cmasso@(Android), cmasso@(iOS), kbleicher@(ChromeOS), govind@(Desktop)

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

Pls merge your change to M67 branch 3396 ASAP so we can pick it up for next M67 Beta release. Thank you.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/f3f2ebadeda2251b27c568cc9b52e6b03562ece4

commit f3f2ebadeda2251b27c568cc9b52e6b03562ece4
Author: Mounir Lamouri <mlamouri@chromium.org>
Date: Wed Apr 25 01:00:36 2018

Media Controls: only eat keyboard inputs on popups when using them.

This allows shortcuts such as going to the dev tools to work while the
popup menus are visible.

Bug:  835615 
Change-Id: Ie09bbe679c1356249138cf45c1b24977f7895158
Reviewed-on: https://chromium-review.googlesource.com/1023596
Reviewed-by: Becca Hughes <beccahughes@chromium.org>
Commit-Queue: Mounir Lamouri <mlamouri@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#552719}(cherry picked from commit 682a3df7a2c8046066f265956b9adcd900e9bbfe)
Reviewed-on: https://chromium-review.googlesource.com/1026912
Reviewed-by: Mounir Lamouri <mlamouri@chromium.org>
Cr-Commit-Position: refs/branch-heads/3396@{#279}
Cr-Branched-From: 9ef2aa869bc7bc0c089e255d698cca6e47d6b038-refs/heads/master@{#550428}
[modify] https://crrev.com/f3f2ebadeda2251b27c568cc9b52e6b03562ece4/third_party/blink/renderer/modules/media_controls/elements/media_control_popup_menu_element.cc

Verified the fix on Mac 10.13.1, Windows-10 and Ubuntu 14.04 using Chrome version #67.0.3396.30 as per the comment #0.
Attaching screen cast for reference.
Observed that chrome opened Devtools upon hitting Cmd+Opt+I (In Mac ), Ctrl+Shift+I (In Windows and Ubuntu)
Hence, the fix is working as expected. 
Adding the verified labels.
Note: Able to reproduce the issue on chrome version with out fix.

Thanks...!!

Deleted: 835615 CL Verif.webm 4.0 MB

	835615 CL Verif.webm 4.0 MB View Download