Bug 1760259 - [remote] Disable session restore infobar for marionette tests, webplatform tests and geckodriver r=webdriver-reviewers,whimboo

Depends on D141939

Differential Revision: https://phabricator.services.mozilla.com/D141444

remote/shared/RecommendedPreferences.jsm

@@ -107,6 +107,9 @@ const COMMON_PREFERENCES = new Map([
   // as it is picked up at runtime.
   ["browser.shell.checkDefaultBrowser", false],
 
+  // Disable session restore infobar
+  ["browser.startup.couldRestoreSession.count", -1],
+
   // Do not redirect user when a milstone upgrade of Firefox is detected
   ["browser.startup.homepage_override.mstone", "ignore"],
 

testing/marionette/client/marionette_driver/geckoinstance.py

@@ -587,6 +587,8 @@ class DesktopInstance(GeckoInstance):
         "browser.sessionstore.resume_from_crash": False,
         # Don't check for the default web browser during startup
         "browser.shell.checkDefaultBrowser": False,
+        # Disable session restore infobar
+        "browser.startup.couldRestoreSession.count": -1,
         # Needed for branded builds to prevent opening a second tab on startup
         "browser.startup.homepage_override.mstone": "ignore",
         # Start with a blank page by default

testing/profiles/web-platform/user.js

@@ -8,6 +8,8 @@
 user_pref("browser.newtabpage.enabled", false);
 // Don't restore the last open set of tabs if the browser has crashed
 user_pref("browser.sessionstore.resume_from_crash", false);
+//  Disable session restore infobar.
+user_pref("browser.startup.couldRestoreSession.count", -1);
 // Don't show the Bookmarks Toolbar on any tab (the above pref that
 // disables the New Tab Page ends up showing the toolbar on about:blank).
 user_pref("browser.toolbars.bookmarks.visibility", "never");