Backed out 5 changesets (bug 1930292, bug 1932600) for causing chrome failures at test_maximized_persist.xhtml on a CLOSED TREE

Backed out changeset 2418bfee53f1 (bug 1932600)
Backed out changeset 3297e990715a (bug 1932600)
Backed out changeset 24a670dea977 (bug 1930292)
Backed out changeset 7dd9f48216dd (bug 1930292)
Backed out changeset 15a85ec739dd (bug 1930292)

browser/tools/mozscreenshots/mozscreenshots/extension/TestRunner.sys.mjs

@@ -368,7 +368,7 @@ export var TestRunner = {
 
       this.mochitestScope.info("called " + config.name);
       // Add a default timeout of 700ms to avoid conflicts when configurations
-      // try to apply at the same time. e.g WindowSize and CustomTitlebar
+      // try to apply at the same time. e.g WindowSize and TabsInTitlebar
       return Promise.race([applyPromise, timeoutPromise]).then(result => {
         return new Promise(resolve => {
           setTimeout(() => resolve(result), 700);

browser/tools/mozscreenshots/mozscreenshots/extension/configurations/TabsInTitlebar.sys.mjs

@@ -4,7 +4,7 @@
 
 const PREF_TABS_IN_TITLEBAR = "browser.tabs.inTitlebar";
 
-export var CustomTitlebar = {
+export var TabsInTitlebar = {
   init() {},
 
   configurations: {

browser/tools/mozscreenshots/mozscreenshots/extension/moz.build

@@ -24,12 +24,12 @@ FINAL_TARGET_FILES.resources.configurations += [
     "configurations/Buttons.sys.mjs",
     "configurations/ControlCenter.sys.mjs",
     "configurations/CustomizeMode.sys.mjs",
-    "configurations/CustomTitlebar.sys.mjs",
     "configurations/DevTools.sys.mjs",
     "configurations/LightweightThemes.sys.mjs",
     "configurations/PermissionPrompts.sys.mjs",
     "configurations/Preferences.sys.mjs",
     "configurations/Tabs.sys.mjs",
+    "configurations/TabsInTitlebar.sys.mjs",
     "configurations/Toolbars.sys.mjs",
     "configurations/UIDensities.sys.mjs",
     "configurations/WindowSize.sys.mjs",

browser/tools/mozscreenshots/primaryUI/browser_primaryUI.js

@@ -12,7 +12,7 @@ add_task(async function capture() {
   }
 
   let sets = [
-    "CustomTitlebar",
+    "TabsInTitlebar",
     "Tabs",
     "WindowSize",
     "Toolbars",