Issue 3499 - Remove old messaging API

lib/utils.js

Index: lib/utils.js
===================================================================
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -508,54 +508,16 @@ let Utils = exports.Utils =
       if (accesskey != "")
         element.setAttribute("accesskey", accesskey);
 
       // Labels forward changes of the accessKey property to their control, only
       // set it for actual controls.
       if (element.localName != "label")
         element.accessKey = accesskey;
     }
-  },
-
-  /**
-   * Adds a message handler that will respond to both synchronous and
-   * asynchonous messages.
-   * @param {string} messageName  name of the message to listen to
-   * @param {Function} handler  handler to be called with the message data. The
-   *                            return value will be sent back to the child.
-   */
-  addChildMessageListener: function(messageName, handler)
-  {
-    let messageManager = Cc["@mozilla.org/parentprocessmessagemanager;1"]
-                           .getService(Ci.nsIMessageListenerManager);
-    let wrapper = (message) => {
-      let {callbackID, data} = message.data;
-      let response = undefined;
-      try
-      {
-        response = handler(data);
-      }
-      catch (e)
-      {
-        Cu.reportError(e);
-      }
-
-      if (callbackID)
-      {
-        let target = message.target.QueryInterface(Ci.nsIMessageSender);
-        target.sendAsyncMessage("AdblockPlus:Response", {
-          callbackID,
-          response
-        });
-      }
-      else
-        return response;
-    };
-    messageManager.addMessageListener(messageName, wrapper);
-    onShutdown.add(() => messageManager.removeMessageListener(messageName, wrapper));
   }
 };
 
 /**
  * A cache with a fixed capacity, newer entries replace entries that have been
  * stored first.
  * @constructor
  */