Everyone trusts Google, whether they like it or not. This is the definition of trust that security operations use: A trusts B if B is capable of doing something nasty to A.

Google has a heck-load of money. They could pay a disreputable aggregate company to deliver a load of tonne-bags of gravel to my front garden, blocking my car in, and generally destroying the landscaping. I trust them not to do this, and the reason this is true is because I haven't taken 100%-effective steps that would prevent them from doing so, and therefore they are capable of it. This example may seem a little ridiculous (there are no 100%-effective steps I could take, and I think they're trustworthy on this particular score), but it is a technically correct example of how everyone trusts Google.