Bug 1712902 - [remote] Conditionally enable WebDriver Bidi on Nightly channel only. r=remote-protocol-reviewers,jdescottes

As long as the upcoming WebDriver BiDi implementation isn't stable
enough, it will only be enabled for Nighlty builds for now.

Differential Revision: https://phabricator.services.mozilla.com/D116414

modules/libpref/init/all.js

@@ -4475,6 +4475,16 @@ pref("services.common.log.logger.tokenserverclient", "Debug");
   // Sets recommended automation preferences when Marionette is started.
   pref("marionette.prefs.recommended", true);
 
+  // Defines the protocols that will be active for the Remote Agent.
+  // 1: WebDriver BiDi
+  // 2: CDP (Chrome DevTools Protocol)
+  // 3: WebDriver BiDi + CDP
+  #if defined(NIGHTLY_BUILD)
+    pref("remote.active-protocols", 3);
+  #else
+    pref("remote.active-protocols", 2);
+  #endif
+
   // Limits remote agent to listen on loopback devices,
   // e.g. 127.0.0.1, localhost, and ::1.
   pref("remote.force-local", true);