Bug 1034156 - CSP: updating csp/test_bug949549.html to use C++ backend (r=sstamm)

--HG--
extra : rebase_source : f3c4ad3f7b2bee8ecde302bdd70f259271191069

content/base/test/csp/test_bug949549.html

@@ -14,7 +14,7 @@
 
   // Ensure that `setRequestContext` doesn't throw with app:// URLs
 
-  const csp = SpecialPowers.Cc["@mozilla.org/contentsecuritypolicy;1"]
+  const csp = SpecialPowers.Cc["@mozilla.org/cspcontext;1"]
               .createInstance(SpecialPowers.Ci.nsIContentSecurityPolicy);
 
   const gManifestURL = "http://www.example.com/chrome/dom/tests/mochitest/webapps/apps/basic.webapp";