The issue noted in the removed comment no longer seems to apply. The URL
loaded here is triggered before WebDriver even issues the POST /session
command.
When we launch Ladybird, we currently:
1. Create a BrowserWindow, whose constructor navigates to the configured
new tab page URL.
2. Then navigate to either "about:blank" or whatever URL is provided via
the command line.
This patch removes step 2 and forwards the URL from the command line (if
any) to BrowserWindow. BrowserWindow's constructor then either navigates
to that URL or the new tab page URL.
Currently, if the JS console is open and tied to the last opened tab in
the browser window, it will prevent the main process from exiting when
the last tab is closed. This change explicitly closes that tab before
closing the window (if it's the last tab), allowing Qt to delete the
Tab object.
This will help a lot with developing chromes for different UI frameworks
where we can see which helper classes and processes are really using Qt
vs just using it to get at helper data.
As a bonus, remove Qt dependency from WebDriver.
