Bug 1363539 - Remove dependency on DevTools from test_onGarbageCollection.html. r=sfink

MozReview-Commit-ID: LQ8oCAyC7sF

--HG--
extra : rebase_source : 82284076bcff9fa34d7410b22ce90bb6182d3a09

js/xpconnect/tests/chrome/test_onGarbageCollection.html

@@ -13,13 +13,18 @@
     SimpleTest.waitForExplicitFinish();
     const Cu = Components.utils;
 
-    Cu.import("resource://devtools/shared/Loader.jsm");
-    const require = devtools.require;
-
     const { gc } = Cu.getJSTestingFunctions();
 
-    const Debugger = require("Debugger");
-    const dbg = new Debugger(this);
+    // Instanciate `Debugger` in a sandbox as Debugger requires to be created
+    // in a compartment different than the debuggee.
+    let sandbox = Cu.Sandbox(Components.Constructor("@mozilla.org/systemprincipal;1", "nsIPrincipal")());
+    Cu.evalInSandbox(
+      "Components.utils.import('resource://gre/modules/jsdebugger.jsm');" +
+      "addDebuggerToGlobal(this);",
+      sandbox
+    );
+
+    const dbg = new sandbox.Debugger(this);
 
     dbg.memory.onGarbageCollection = function (data) {
       // Don't keep calling this hook after we finish.