Bug 1483325 - re-enable sidebar test after checking for correct messages to get them out of the queue, rs=mixedpuppy

--HG--
extra : rebase_source : c2b63cb639b0fadb1eeaa583ad1ca930dc04ca94

browser/components/extensions/test/browser/browser-common.ini

@@ -159,7 +159,6 @@ skip-if = !e10s || !crashreporter # the tab's process is killed during the test.
 [browser_ext_sessions_window_tab_value.js]
 [browser_ext_settings_overrides_default_search.js]
 [browser_ext_sidebarAction.js]
-skip-if = debug #Bug 1483325
 [browser_ext_sidebarAction_browser_style.js]
 [browser_ext_sidebarAction_context.js]
 [browser_ext_sidebarAction_contextMenu.js]

browser/components/extensions/test/browser/browser_ext_sidebarAction.js

@@ -70,6 +70,7 @@ add_task(async function sidebar_initial_install() {
   ok(document.getElementById("sidebar-box").hidden, "sidebar box is not visible");
   let extension = ExtensionTestUtils.loadExtension(getExtData());
   await extension.startup();
+  await extension.awaitMessage("sidebar");
 
   // Test sidebar is opened on install
   ok(!document.getElementById("sidebar-box").hidden, "sidebar box is visible");