Comment on attachment 8781009 [details] Bug 1278205 - use preference for exposing presentation API. . summary of this change: 1. remove |presentation| permission 2. use |dom.presentation.enabled| for API that is common for both controller and receiver 3. use |dom.presentation.controller.enabled| for API that is only for controller. 4. use |dom.presentation.receiver.enabled| for API that is only for receiver.

So dom.presentation.enabled needs to be enabled before dom.presentation.controller.enabled or dom.presentation.receiver.enabled can enable certain parts of the API?

Comment on attachment 8781009 [details] Bug 1278205 - use preference for exposing presentation API. . https://reviewboard.mozilla.org/r/71514/#review69214 Ah, this way. And yes, the spec seem to hint that some interfaces are exposed only in some contexts.

(In reply to Olli Pettay [:smaug] from comment #8) > So dom.presentation.enabled needs to be enabled before > dom.presentation.controller.enabled or dom.presentation.receiver.enabled can > enable certain parts of the API? Yes, unfortunately we need to fiddle two preferences for controller and receiver, three preferences for 1-UA device since it supports both APIs.

Pushed by schien@mozilla.com: https://hg.mozilla.org/integration/autoland/rev/5f9021b0c901 use preference for exposing presentation API. r=smaug.

The compat data on these pages now show the preference info: https://developer.mozilla.org/en-US/docs/Web/API/Presentation https://developer.mozilla.org/en-US/docs/Web/API/Presentation/defaultRequest https://developer.mozilla.org/en-US/docs/Web/API/Presentation/receiver https://developer.mozilla.org/en-US/docs/Web/API/PresentationAvailability https://developer.mozilla.org/en-US/docs/Web/API/PresentationAvailability/value https://developer.mozilla.org/en-US/docs/Web/API/PresentationAvailability/onchange https://developer.mozilla.org/en-US/docs/Web/API/PresentationConnection https://developer.mozilla.org/en-US/docs/Web/API/PresentationConnection/binaryType https://developer.mozilla.org/en-US/docs/Web/API/PresentationConnection/close https://developer.mozilla.org/en-US/docs/Web/API/PresentationConnection/id https://developer.mozilla.org/en-US/docs/Web/API/PresentationConnection/send https://developer.mozilla.org/en-US/docs/Web/API/PresentationConnection/state https://developer.mozilla.org/en-US/docs/Web/API/PresentationConnection/terminate https://developer.mozilla.org/en-US/docs/Web/API/PresentationConnection/url https://developer.mozilla.org/en-US/docs/Web/API/PresentationConnectionAvailableEvent https://developer.mozilla.org/en-US/docs/Web/API/PresentationConnectionAvailableEvent/PresentationConnectionAvailableEvent https://developer.mozilla.org/en-US/docs/Web/API/PresentationConnectionAvailableEvent/connection https://developer.mozilla.org/en-US/docs/Web/API/PresentationConnectionCloseEvent https://developer.mozilla.org/en-US/docs/Web/API/PresentationConnectionList https://developer.mozilla.org/en-US/docs/Web/API/PresentationReceiver https://developer.mozilla.org/en-US/docs/Web/API/PresentationRequest https://developer.mozilla.org/en-US/docs/Web/API/PresentationRequest/PresentationRequest https://developer.mozilla.org/en-US/docs/Web/API/PresentationRequest/getAvailability https://developer.mozilla.org/en-US/docs/Web/API/PresentationRequest/onconnectionavailable https://developer.mozilla.org/en-US/docs/Web/API/PresentationRequest/reconnect https://developer.mozilla.org/en-US/docs/Web/API/PresentationRequest/start