Bug 1513854 - Read Normandy recipes from Remote Settings on Nightly r=mythmon

Read Normandy recipes from Remote Settings on Nightly

Differential Revision: https://phabricator.services.mozilla.com/D24055

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

toolkit/components/featuregates/Features.toml

@@ -7,4 +7,4 @@ restart-required = false
 type = "boolean"
 bug-numbers = [1519276]
 is-public = true
-default-value = false
+default-value: true

toolkit/components/normandy/docs/index.rst

@@ -6,11 +6,22 @@ Shield Recipe Client
 
 Normandy (aka the Shield Recipe Client) is a targeted change control
 system, allowing small changes to be made within a release of Firefox,
-such as studies. It downloads recipes and actions from the `recipe
-server`_, verifies their cryptographic signatures, and then executes
-them.
+such as studies.
+
+It downloads recipes and actions from :ref:`Remote Settings <services/remotesettings>`
+and then executes them.
+
+.. note::
+
+   Originally, the recipes were fetched from the `recipe server`_, but in `Bug 1513854`_
+   the source was changed to *Remote Settings*. The cryptographic signatures are verified
+   at the *Remote Settings* level (integrity) and at the *Normandy* level
+   (authenticity of publisher).
+
+   The source can still be controlled by :ref:`Feature Gates <components/featuregates>`.
 
 .. _recipe server: https://github.com/mozilla/normandy/
+.. _Bug 1513854: https://bugzilla.mozilla.org/show_bug.cgi?id=1513854
 
 .. toctree::
    :maxdepth: 1

toolkit/components/normandy/test/browser/browser_RecipeRunner.js

@@ -128,6 +128,11 @@ decorate_task(
 );
 
 decorate_task(
+  withPrefEnv({
+    set: [
+      ["features.normandy-remote-settings.enabled", false],
+    ],
+  }),
   withStub(Uptake, "reportRunner"),
   withStub(NormandyApi, "fetchRecipes"),
   withStub(ActionsManager.prototype, "runRecipe"),