Bug 1577199 add speaker-selection feature policy r=ckerschb

Differential Revision: https://phabricator.services.mozilla.com/D119866

dom/security/featurepolicy/FeaturePolicyUtils.cpp

@@ -36,6 +36,7 @@ static FeatureMap sSupportedFeatures[] = {
     {"fullscreen", FeaturePolicyUtils::FeaturePolicyValue::eSelf},
     {"web-share", FeaturePolicyUtils::FeaturePolicyValue::eSelf},
     {"gamepad", FeaturePolicyUtils::FeaturePolicyValue::eAll},
+    {"speaker-selection", FeaturePolicyUtils::FeaturePolicyValue::eSelf},
 };
 
 /*
@@ -52,8 +53,6 @@ static FeatureMap sExperimentalFeatures[] = {
     {"midi", FeaturePolicyUtils::FeaturePolicyValue::eSelf},
     {"payment", FeaturePolicyUtils::FeaturePolicyValue::eAll},
     {"document-domain", FeaturePolicyUtils::FeaturePolicyValue::eAll},
-    // TODO: not supported yet!!!
-    {"speaker", FeaturePolicyUtils::FeaturePolicyValue::eSelf},
     {"vr", FeaturePolicyUtils::FeaturePolicyValue::eAll},
     // https://immersive-web.github.io/webxr/#feature-policy
     {"xr-spatial-tracking", FeaturePolicyUtils::FeaturePolicyValue::eSelf},

dom/security/featurepolicy/test/mochitest/test_featureList.html

@@ -21,7 +21,7 @@ let supportedFeatures = [
   "payment",
   "display-capture",
   "document-domain",
-  "speaker",
+  "speaker-selection",
   "vr",
   "web-share",
 ];