This series of patches enable Adobe PDF Reader 11 protected mode, which is essentially a Chromium sandbox, to work properly.
-- v2: server: Allow creating a real explorer desktop window for invisible window stations. user32/tests: Test that an actual desktop window should be created on invisible window stations. win32u: Use the window station name to check if an application is running as a service. user32/tests: Test monitor information with an invisible window station. win32u: Create explorer with the thread effective access token.