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If enabled or not configured (default), a Web page can use
screen-share APIs (e.g., getDisplayMedia() or the Desktop Capture extension API)
to prompt the user to select a tab, window or desktop to capture.
When this policy is disabled, any calls to screen-share APIs will fail
with an error; however this policy is not considered (and a site will be
allowed to use screen-share APIs) if the site matches an origin pattern in
any of the following policies:
ScreenCaptureAllowedByOrigins,
WindowCaptureAllowedByOrigins,
TabCaptureAllowedByOrigins,
SameOriginTabCaptureAllowedByOrigins.