Bug 1528031 - Require [SecureContext] for navigator.mediaDevices & navigator.mozGetUserMedia(). r=pehrsons,smaug

Differential Revision: https://phabricator.services.mozilla.com/D33836

--HG--
extra : moz-landing-system : lando

modules/libpref/init/StaticPrefList.h

@@ -6299,7 +6299,7 @@ VARCACHE_PREF(
   Live,
   "media.devices.insecure.enabled",
   media_devices_insecure_enabled,
-  bool, true
+  bool, false
 )
 
 // If the above pref is also enabled, this pref enabled getUserMedia() support

testing/web-platform/meta/mediacapture-record/__dir__.ini

@@ -1 +1 @@
-prefs: [media.navigator.permission.disabled:true, media.navigator.streams.fake:true, media.devices.insecure.enabled:false, dom.security.featurePolicy.enabled:true, dom.security.featurePolicy.header.enabled:true, dom.security.featurePolicy.webidl.enabled:true]
+prefs: [media.navigator.permission.disabled:true, media.navigator.streams.fake:true, dom.security.featurePolicy.enabled:true, dom.security.featurePolicy.header.enabled:true, dom.security.featurePolicy.webidl.enabled:true]

testing/web-platform/meta/mediacapture-streams/__dir__.ini

@@ -1 +1 @@
-prefs: [media.navigator.permission.disabled:true, media.navigator.streams.fake:true, media.devices.insecure.enabled:false, dom.security.featurePolicy.enabled:true, dom.security.featurePolicy.header.enabled:true, dom.security.featurePolicy.webidl.enabled:true]
+prefs: [media.navigator.permission.disabled:true, media.navigator.streams.fake:true, dom.security.featurePolicy.enabled:true, dom.security.featurePolicy.header.enabled:true, dom.security.featurePolicy.webidl.enabled:true]