Re: [w3c/permissions] Introduce "Automation" section (#151)

jugglinmike commented on this pull request.



> +      <code>|rootDesc|.{{PermissionDescriptor/name}}</code> isn't <a>allowed in
+      non-secure contexts</a>, return <a>error</a> with <a>error code</a>
+      <a>invalid argument</a>.</li>
+      <li>Let |state| by the result of <a>getting the property</a> "`state`"
+      from the |parameters| argument.</li>
+      <li>If |state| is neither "`granted`", "`prompt`", nor "`denied`", return
+      <a>error</a> with <a>error code</a> <a>invalid argument</a>.</li>
+      <li>Let |allRealms| be the result of <a>getting the property</a>
+      "`allRealms`" from the |parameters| argument.</a></li>
+      <li>If |allRealms| is `undefined`, let |allRealms| be false.</li>
+      <li>If |allRealms| is neither true nor false, return <a>error</a> with
+      <a>error code</a> <a>invalid argument</a>.</li>
+      <li>Interpret the value of |state| as <a>new information about the user's
+      intent</a>. If |allRealms| is true, this information applies to other
+      <a>realms</a> with the <a>same origin</a>.
+      <li>Return <a>success</a> with data `null`.</li>

I was shooting for completeness here; ideally, the WebDriver command can be used to simulate any user behavior. That said, it may not be worth the effort, since it seems exceedingly unlikely that an application would concern itself with this case (e.g. multiple simultaneous tabs, communicating via `postMessage`, and able to detect when/if only one received new information about the user's intent).

On the third hand, it might be safest to initially specify a solution that is complete as possible and leave subjective determination of "practically complete" to implementers. That way, if developer experience reveals that this *is* relevant, then the problem can be resolved without revisiting the standards process.

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