Bug 1052089 - Make the junk scope invisible to the debugger and Compo…

…nents-less. r=billm

This prevents the JS engine from trying to fire off debugger notifications and
do other complicated things when we create this thing early in startup in the
upcoming patches.

js/xpconnect/src/XPCJSRuntime.cpp

@@ -3558,6 +3558,8 @@ XPCJSRuntime::GetJunkScope()
         AutoSafeJSContext cx;
         SandboxOptions options;
         options.sandboxName.AssignLiteral("XPConnect Junk Compartment");
+        options.invisibleToDebugger = true;
+        options.wantComponents = false;
         RootedValue v(cx);
         nsresult rv = CreateSandboxObject(cx, &v, nsContentUtils::GetSystemPrincipal(), options);
         NS_ENSURE_SUCCESS(rv, nullptr);