Developer tools toggle doesn't work in a window opened with no decorations

[wknapik]

Description

I opened the support chat on the DigiCert website (which opens in a new window, without decorations) and opened developer tools. Once I was done, I wanted to close dev tools, but the x button to close them was missing and the ctrl+shift+i keyboard shortcut would not toggle them off, but instead kept opening another instance each time.

after using ctrl+shift+i a few times

Steps to Reproduce

1. Log in at digicert.com
2. Open the support chat
3. Open developer tools
4. Can't close developer tools

Actual result:

The keyboard toggle is not a toggle and the x button to close is missing

Expected result:

The keyboard shortcut should be a toggle and the x button should be there

Reproduces how often:

Easily reproduced

Brave version (brave://version info)

Brave	1.34.80 Chromium: 97.0.4692.71 (Official Build) (64-bit)
Revision	adefa7837d02a07a604c1e6eff0b3a09422ab88d-refs/branch-heads/4692@{#1247}
OS	Linux

Version/Channel Information:

• Can you reproduce this issue with the current release? ?
• Can you reproduce this issue with the beta channel? ?
• Can you reproduce this issue with the nightly channel? ?

Other Additional Information:

• Does the issue resolve itself when disabling Brave Shields? ?
• Does the issue resolve itself when disabling Brave Rewards? ?
• Is the issue reproducible on the latest version of Chrome? ?

Miscellaneous Information:

Don't have time for more testing, can do later if requested

[wknapik]

Now I noticed that ctrl+w closes dev tools in that window. That was unexpected.