1 files changed, 49 insertions, 0 deletions
diff --git a/toolkit/components/backgroundtasks/defaults/backgroundtasks_browser.js b/toolkit/components/backgroundtasks/defaults/backgroundtasks_browser.js
new file mode 100644
index 0000000000..fbb8b34827
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+++ b/toolkit/components/backgroundtasks/defaults/backgroundtasks_browser.js
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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// These preferences override override browser/-specific preferences in
+// `firefox.js`.  Use `backgroundtasks.js` to override general Gecko preferences
+// in `greprefs.js`.
+
+/* global pref */
+
+// XUL notifications make no sense in background tasks.  This is only applies to
+// Windows for now.
+pref("alerts.useSystemBackend", true);
+pref("alerts.useSystemBackend.windows.notificationserver.enabled", true);
+
+// Configure Messaging Experiments for background tasks, with
+// background task-specific feature ID.  The regular Firefox Desktop
+// Remote Settings collection will be used.
+pref(
+  "browser.newtabpage.activity-stream.asrouter.providers.messaging-experiments",
+  '{"id":"messaging-experiments","enabled":true,"type":"remote-experiments","featureIds":["backgroundTaskMessage"],"updateCycleInMs":3600000}'
+);
+
+// Disable all other Messaging System providers save for
+// `browser.newtabpage.activity-stream.asrouter.providers.message-groups`, which
+// is required for the system to function.
+pref("browser.newtabpage.activity-stream.asrouter.providers.cfr", "null");
+pref("browser.newtabpage.activity-stream.asrouter.providers.snippets", "null");
+pref(
+  "browser.newtabpage.activity-stream.asrouter.providers.whats-new-panel",
+  "null"
+);
+
+// The `browser.newtabpage.activity-stream.asrouter.providers.cfr` provider is
+// disabled, but belt and braces: disable extension recommendations and feature
+// recommendations.  Neither of these make sense in background tasks, and they
+// could trigger telemetry.
+pref("browser.newtabpage.activity-stream.asrouter.userprefs.cfr.addons", false);
+pref(
+  "browser.newtabpage.activity-stream.asrouter.userprefs.cfr.features",
+  false
+);
+
+// Don't refresh experiments while a background task is running.
+pref("app.normandy.run_interval_seconds", 0);
+
+// Use a separate Nimbus application ID from regular Firefox Desktop.
+// This prevents enrolling in regular desktop experiments.
+pref("nimbus.appId", "firefox-desktop-background-task");