>>mfwit+(OP)
Google does something like this with the GMail app on iPhone— you click links and instead of just opening Safari, it pops up a "which browser to use" selector modal, which is really just an advertisement for you to install Chrome.
>>darren+ud
Even with this setting enabled (for Safari), it still asks me every week or two where I want to open the link and tries to get me to download Chrome. I doubt they do this if you have Chrome enabled.