The Tor Browser / file revision

 /* This Source Code Form is subject to the terms of the Mozilla Public

  * License, v. 2.0. If a copy of the MPL was not distributed with this

  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

 #include "InterAppComm.h"

 #include "nsContentUtils.h"

 #include "nsPIDOMWindow.h"

 #include "nsJSPrincipals.h"

 #include "mozilla/Preferences.h"

 #include "AccessCheck.h"

 using namespace mozilla::dom;

 /* static */ bool

 InterAppComm::EnabledForScope(JSContext* /* unused */,

 			      JS::Handle<JSObject*> /* unused */)

 {

   // Disable the constructors if they're disabled by the preference for sure.

   if (!Preferences::GetBool("dom.inter-app-communication-api.enabled", false)) {

   	return false;

   }

   // Only expose the constructors to the chrome codes for Gecko internal uses.

   // The content pages shouldn't be aware of the constructors.

   return nsContentUtils::ThreadsafeIsCallerChrome();

 }