[Plugins] Bring over timeline, clock plugins

WTD-1239

platform/features/clock/src/actions/RestartTimerAction.js

@@ -0,0 +1,33 @@
+/*global define*/
+
+define(
+    ['./AbstractStartTimerAction'],
+    function (AbstractStartTimerAction) {
+        "use strict";
+
+        /**
+         * Implements the "Restart at 0" action.
+         *
+         * Behaves the same as (and delegates functionality to)
+         * the "Start" action.
+         * @implements Action
+         */
+        function RestartTimerAction(now, context) {
+            return new AbstractStartTimerAction(now, context);
+        }
+
+        RestartTimerAction.appliesTo = function (context) {
+            var model =
+                (context.domainObject && context.domainObject.getModel())
+                || {};
+
+            // We show this variant for timers which already have
+            // a target time.
+            return model.type === 'warp.timer' &&
+                    model.timestamp !== undefined;
+        };
+
+        return RestartTimerAction;
+
+    }
+);