Bug 1025864 - Add observer updates when AudioParams change in the Web Audio Editor. r=vp, r=dcamp

browser/devtools/shared/frame-script-utils.js

@@ -4,6 +4,8 @@
 
 "use strict";
 
+let { utils: Cu, interfaces: Ci } = Components;
+
 addMessageListener("devtools:test:history", function ({ data }) {
   content.history[data.direction]();
 });
@@ -16,3 +18,11 @@ addMessageListener("devtools:test:reload", function ({ data }) {
   data = data || {};
   content.location.reload(data.forceget);
 });
+
+addMessageListener("devtools:test:forceCC", function () {
+  let DOMWindowUtils = content.QueryInterface(Ci.nsIInterfaceRequestor)
+    .getInterface(Ci.nsIDOMWindowUtils)
+  DOMWindowUtils.cycleCollect();
+  DOMWindowUtils.garbageCollect();
+  DOMWindowUtils.garbageCollect();
+});