Test browser functionality with ESR 91

[llewelld]

Sailfish Browser provides a set of functionalities that go above and beyond just rendering of the webpage. All of these will need to be tested and working for ESR 91 to be usable. Here's a minimal set.

• Video rendering and controls.
• Audio output and controls.
• Private browsing.
• Search on page.
• Share link.
• Save web page as PDF.
• Desktop/mobile view switching.
• Bookmarks.
• History.
• Downloads (including setting save destination).
• Configuration using about:config.
• Home page functionality.
• Search providers.
• Close tabs on exit.
• Do not track.
• JavaScript enable/disable toggle.
• Password storage.
• Permissions: location, pop-ups, cookies, camera, microphone.
• Clearing the browser data.
• Automatic dark/light theme switching.
• Everything on the browser test page.
• WebRTC audio and video.

[llewelld]

Most of the tests have passed but a few are failing:

1. Video rendering and controls: total fail: fails on BBC iPlayer and Jolla's test page.
2. Audio output and controls: partial fail: fails on BBC Sounds but succeeds on Jolla's test page.
3. Password storage: total fail.
4. Automatic dark/light theme switching: partial fail: fixed dark/light theming works but automatic switching with the ambience fails.
5. Everything on the browser test page: fails: single select widget; external links; full screen; double-tap.

Although in some cases the functionality worked as expected there were also some concerning error messages even on some of the passing cases:

% Print to PDF
JavaScript error: resource://gre/actors/BrowserElementParent.jsm, line 24: TypeError: browser is null
% Exiting the browser
JavaScript error: file:///usr/lib64/mozembedlite/components/EmbedLiteChromeManager.js, line 170: TypeError: chromeListener is undefined
% Saving a downloaded file
JavaScript error: resource://gre/modules/pdfjs.js, line 29: NS_ERROR_NOT_AVAILABLE: 
% Login manager
JavaScript error: resource://gre/modules/LoginHelper.jsm, line 1734: TypeError: browser is null