Bug 1657071 - Restrict getGamepads() to secure contexts for Beta r=kip

release SecureContext restriction to 81 beta channel.

Differential Revision: https://phabricator.services.mozilla.com/D85830

dom/base/Navigator.cpp

@@ -1490,7 +1490,7 @@ void Navigator::GetGamepads(nsTArray<RefPtr<Gamepad>>& aGamepads,
   if (!mGamepadSecureContextWarningShown && !win->IsSecureContext()) {
     mGamepadSecureContextWarningShown = true;
     auto msg =
-        u"The Gamepad API is only available in "
+        u"The Gamepad API will only be available in "
         "secure contexts (e.g., https). Please see "
         "https://hacks.mozilla.org/2020/07/securing-gamepad-api/ for more "
         "info."_ns;
@@ -1498,11 +1498,14 @@ void Navigator::GetGamepads(nsTArray<RefPtr<Gamepad>>& aGamepads,
         msg, nsIScriptError::warningFlag, "DOM"_ns, win->GetExtantDoc());
   }
 
-#ifdef NIGHTLY_BUILD
+#ifdef EARLY_BETA_OR_EARLIER
   if (!win->IsSecureContext()) {
     return;
   }
+#endif
 
+#ifdef NIGHTLY_BUILD
+  // We will move this into Beta in Firefox 82
   if (!FeaturePolicyUtils::IsFeatureAllowed(win->GetExtantDoc(),
                                             u"gamepad"_ns)) {
     aRv.ThrowSecurityError(