Test Windows installer for brave-core; ensure silent install possible

[bsclifton]

We'll want to try (via CLI) the stub installer on Windows to ensure we can do a silent install. We can capture the exact shell command ran here too

If (for some reason) we run into problems doing that, we can ask folks who may be familiar with the installer (ex: @simonhong or @emerick) for help 😄

[bsclifton]

Looks like silent install would be done with BraveBrowserBetaSetup.exe /silent /install

However, when running the above it fails for me. If I remove /silent, I can see it's trying to elevate using UAC ☹️ Will reach out to @simonhong for more info

[bsclifton]

If I launch using BraveBrowserBetaSetup.exe /install, it comes up with the UAC prompt. I can click No, and it'll allow you to continue (with a user-specific install) which after clicking Yes installs to:
%USERPROFILE%\AppData\Local\BraveSoftware\Brave-Browser-Beta\Application

I'm looking in the source now to try and find more command line options. Would like to do this silently

[bsclifton]

OK verified with @simonhong that this will likely need to be done when creating the stub installer. We'll want to have two installers created:

• regular installer (what we have now)
• silent installer (which defaults to single user install, because it won't elevate to admin)

At that point, the above args would work (/silent /install) against the silent installer

When generating the installer, we'll need to append the following arg (to allow it to work properly):
needsadmin=False

For example:
./ApplyTag.exe BraveUpdateSetup.exe BraveBrowserDevSetup.exe "appguid={GUID}&appname=NAME&needsadmin=False&lang=en"

[bsclifton]

This is definitely possible. We'll need to change the code creating the Omaha stub installer to allow needsadmin=False. I'm working through that (and automating some of the process) with https://github.com/brave/devops/pull/335

Once a binary is available, it would be installable like so:
BraveBrowserSetupSilent.exe /silent /install