Google publicly published their guiding about Privacy Principles for better understanding of how they think about these issues from a product perspective..

* Use information to provide our users with valuable products and services.
* Develop products that reflect strong privacy standards and practices.
* Make the collection of personal information transparent.
* Give users meaningful choices to protect their privacy.
* Be a responsible steward of the information we hold.

These privacy principles are designed to guide the decisions they make when Google create new technologies.