Bug 1378738 - Stop using sdk/window/utils in Netmonitor; r=rickychien

MozReview-Commit-ID: 4Z4pDHxhbZN

--HG--
extra : rebase_source : febe5d1737f7d80711aa890065308dd9422236d7

devtools/client/netmonitor/src/har/har-utils.js

@@ -6,8 +6,10 @@
 
 "use strict";
 
+const Services = require("Services");
 const { Ci, Cc, CC } = require("chrome");
 const { XPCOMUtils } = require("resource://gre/modules/XPCOMUtils.jsm");
+const { gDevTools } = require("devtools/client/framework/devtools");
 
 XPCOMUtils.defineLazyGetter(this, "dirService", function () {
   return Cc["@mozilla.org/file/directory_service;1"]
@@ -23,7 +25,7 @@ XPCOMUtils.defineLazyGetter(this, "LocalFile", function () {
 });
 
 XPCOMUtils.defineLazyGetter(this, "getMostRecentBrowserWindow", function () {
-  return require("sdk/window/utils").getMostRecentBrowserWindow;
+  return Services.wm.getMostRecentWindow(gDevTools.chromeWindowType);
 });
 
 const OPEN_FLAGS = {