Add --disable-default-apps-flag for live preview

[petetnt]

Fixes adobe/brackets#11617.

Currently when Brackets launches live preview (for the first time), it uses a new profile. Chrome then proceeds to install the default Chrome apps (Youtube, Gmail, Google Search, Web Store, Google Docs...) for the said user. This can create situations like described in adobe/brackets#11617.

This PR adds --disable-default-apps-flag for remote debugging arguments, which disables that said behaviour. (Plus it could/should make the first live preview experience a tad bit faster 🔥)

[nethip]

@petetnt Thanks for investigating this issue and fixing it as well! Did you get a chance to run unit tests with this PR. If all the tests are passing, then we are good to go with this PR 👍

[petetnt]

@nethip, successfully ran all the LivePreview related tests.

However some instability because I am building the binary with Visual Studio 2013... GetVersionEx is deprecated -> it won't compile even with turning Treat Warnings as Errors (/WX) off (/WX-) so I had to hack around those which might be the cause (running the tests against brackets#master + brackets-shell#master randomly fails tests too). 😔

[marcelgerber]

I ran all Live Preview tests as well, both with an existing live-dev-profile and without. Everything was fine.

Merging.

[petetnt]

Thanks @marcelgerber 👍

[nethip]

Thanks @marcelgerber @petetnt