Handle OS permission

[marcoscaceres]

Closes #107

The following tasks have been completed:

• Modified Web platform tests - can't be tested directly.

Implementation commitment:

• [ ] WebKit (https://bugs.webkit.org/show_bug.cgi?id=)
• [X] Chromium (implemented in MacOS at least)
• [ ] Gecko - https://bugzilla.mozilla.org/show_bug.cgi?id=1742728

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[marcoscaceres]

Filed Gecko bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1742728