Chrome Version: 67.0.3396.17
OS: Android O
Device: Pixel 2 XL

What steps will reproduce the problem?
(1)Clear all Chrome data. App Info >Storage >Manage Space >Clear all data.
(2) Grant Chrome all permissions. App Info > Permissions.
(3) Enable WebXR Device PI flag
(4) Go to https://immersive-web.github.io/webxr-samples/tests/permission-request.html and enter VR browsing (Place device in headset.)
(5) Using controller press "Enter VR" button to start presentation.
(6) Click on location icon and click "Allow" when prompted.
(7) Click on camera icon and click "Allow" when prompted.
(8) Press app button on controller to go to VR browsing mode.
(9) Open the Omnibox overflow menu and click the refresh button.
(10) Using controller press "Enter VR" button to start presentation.
(11) After a few seconds, press and hold app button until you see the permissions toasts appear. 
(See screenshot #1 here.) Both camera and location display the "Site can use your <feature>" toasts. 
(12) Press app button on controller to go to VR browsing mode.
(13) Open the Omnibox overflow menu and click on the "New incognito tab" button.
(14) Go to https://immersive-web.github.io/webxr-samples/tests/permission-request.html
(15) Using controller press "Enter VR" button to start presentation.
(16) After a few seconds, press and hold app button until you see the permissions toasts appear. 
(See screenshot #1 here.) Both camera and location display the "Site can use your <feature>" toasts. 
(17) Using controller, select the location icon and click "Block" on the following prompt.
(18) Using controller, select the microphone icon and click "Block" on the following prompt.
(19) Press and hold app button until you see the permissions toasts appear.
<-- BUG -->(See screenshot #2 here.) Both camera and location still display the same "Site can use your <feature>" toasts. 


What is the expected result? I'd expect there to be a message like "Background tab can use your <feature>".

What happens instead? Even after blocking the permissions through the UI on the incognito tab, the "Site can use your <feature>" message still appears.

 

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