Bug 1665415 - Add Warp to Nightly Experiments. r=jaws,fluent-reviewers,preferences-reviewers

Differential Revision: https://phabricator.services.mozilla.com/D90444

toolkit/components/featuregates/Features.toml

@@ -176,3 +176,12 @@ preference = "apz.allow_zooming"
 type = "boolean"
 bug-numbers = [1245183]
 is-public = true
+
+[js-warp]
+title = "experimental-features-js-warp"
+description = "experimental-features-js-warp-description"
+restart-required = true
+preference = "javascript.options.warp"
+type = "boolean"
+bug-numbers = [1613592]
+is-public = true

toolkit/locales/en-US/toolkit/featuregates/features.ftl

@@ -103,3 +103,8 @@ experimental-features-devtools-serviceworker-debugger-support-description = Enab
 experimental-features-graphics-desktop-zooming =
     .label = Graphics: Smooth Pinch Zoom
 experimental-features-graphics-desktop-zooming-description = Enable support for smooth pinch zooming on touchscreens and precision touch pads.
+
+# JS JIT Warp project
+experimental-features-js-warp =
+    .label = JavaScript JIT: Warp
+experimental-features-js-warp-description = Enable Warp, a project to improve JavaScript performance and memory usage.