Reject outstanding promises on session shut down

toji · toji · commit 4a755544f1f7 · 2019-04-15T11:03:29.000-07:00
Fixes #556. Adds a catch-all statement that promises shouldn't outlive the session they were returned from and indicates what error they should reject with when the session shuts down.
diff --git a/index.bs b/index.bs
@@ -389,6 +389,7 @@ When an {{XRSession}} is shut down the following steps are run:
   1. Set |session|'s [=ended=] value to <code>true</code>.
   1. If the [=active immersive session=] is equal to |session|, set the [=active immersive session=] to <code>null</code>.
   1. Remove |session| from the [=list of inline sessions=].
+  1. [=Reject=] any outstanding promises returned by |session| with an {{InvalidStateError}}.
   1. If no other features of the user agent are actively using them, perform the necessary platform-specific steps to shut down the device's tracking and rendering capabilities.
 
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