Install Firefox instead.
But if there's anything really untoward going on and people learn about it, it's going to look extremely bad for Google.
While I wouldn't say that's impossible, it's not a high-likelihood event in my book.
Of course, you're free to use alternative browsers.
Just ... keep in mind that if you're using a WebKit browser you're trusting Apple, and if it's WebCore, you're still trusting Google.
Mozilla's Gecko is still independent, however.
Lets also add that Chrome!=Chromium. Chrome is based on Chromium. Not all of it is open and it is not compiled in the public eye.
No thanks.
Most of which can be addressed. There's also a UUID in each build. Privoxy can remove that AFAIU. I don't use Chrome myself, but Chromium.
As I said: you're arguing in the absence of evidence on a pretty widely available and analyzed application. Rather than simply throwing out hypotheticals, a more interesting exercise would be to do some research of posted information to see if there are known issues. Might even make for an interesting HN submission.
I might do that myself.