Bug 797639 - Part 4: Fix Network Monitor test leaks. r=vporof

browser/devtools/netmonitor/test/browser_net_filter-04.js

@@ -23,7 +23,7 @@ function test() {
     is(Prefs.filters[1], "bogus",
       "The second filter type is invalid, but loaded anyway.");
 
-    waitForNetworkEvents(aMonitor, 7).then(() => {
+    waitForNetworkEvents(aMonitor, 8).then(() => {
       testFilterButtons(aMonitor, "js");
       ok(true, "Only the correct filter type was taken into consideration.");
 

browser/devtools/netmonitor/test/browser_net_simple-request.js

@@ -25,7 +25,7 @@ function test() {
     is(NetMonitorView.detailsPaneHidden, true,
       "The details pane should be hidden when the frontend is opened.");
 
-    aMonitor.panelWin.once(aMonitor.panelWin.EVENTS.NETWORK_EVENT, () => {
+    waitForNetworkEvents(aMonitor, 1).then(() => {
       is(document.querySelector("#details-pane-toggle")
         .hasAttribute("disabled"), false,
         "The pane toggle button should be enabled after the first request.");
@@ -37,7 +37,7 @@ function test() {
       is(NetMonitorView.detailsPaneHidden, true,
         "The details pane should still be hidden after the first request.");
 
-      aMonitor.panelWin.once(aMonitor.panelWin.EVENTS.NETWORK_EVENT, () => {
+      waitForNetworkEvents(aMonitor, 1).then(() => {
         is(document.querySelector("#details-pane-toggle")
           .hasAttribute("disabled"), false,
           "The pane toggle button should be still be enabled after a reload.");