Issue 3962 - Update developer tools module paths in Element Hiding Helper

chrome/content/processScript.js

 /*
  * This Source Code is subject to the terms of the Mozilla Public License
  * version 2.0 (the "License"). You can obtain a copy of the License at
  * http://mozilla.org/MPL/2.0/.
  */
 
 const Ci = Components.interfaces;
 const Cu = Components.utils;
 
-let {console} = Cu.import("resource://gre/modules/devtools/Console.jsm", {});
-let {DebuggerServer} = Cu.import("resource://gre/modules/devtools/dbg-server.jsm", {});
+let console;
+try
+{
+  // Gecko 44+
+  ({console} = Cu.import("resource://gre/modules/Console.jsm", {}));
+}
+catch (e)

[saroyanm, 2016/04/21 12:24:13]

According to our requirements page we are supporting ABP for Firefox 44+, why we
still want to have support for older versions ?
https://adblockplus.org/en/requirements

[Wladimir Palant, 2016/04/21 13:05:16]

We encourage users to update to newer Firefox versions, but technically we keep
supporting older versions for a while - at least the current ESR release. ESR is
currently Firefox 38, changing to Firefox 45 soon at which point we can consider
really dropping support for older versions.

+{
+  ({console} = Cu.import("resource://gre/modules/devtools/Console.jsm", {}));
+}
+
+let DebuggerServer;
+try
+{
+  // Firefox 44+
+  let {require} = Cu.import("resource://devtools/shared/Loader.jsm", {});
+  ({DebuggerServer} = require("devtools/server/main"));
+}
+catch (e)
+{
+  ({DebuggerServer} = Cu.import("resource://gre/modules/devtools/dbg-server.jsm", {}));
+}
+
 let {Services} = Cu.import("resource://gre/modules/Services.jsm", {});
 
 let processID = Services.appinfo.processID;
 let maxNodeID = 0;
 let nodes = new Map();
 
 let name = "elemhidehelper";
 let actor = {
   constructorFun: Actor,
   constructorName: name,
@@ skipping 154 matching lines @@
       // forget this node then.
       forgetNode(nodeID);
     }
   }
 }
 
 function forgetNode(nodeID)
 {
   nodes.delete(nodeID);
 }