While Apple punishes those who discover security holes in their iOS/Mac, Google rewards researchers and encourages them to discover security holes so that they can make Chrome more secure. Google has paid around $11,500 to security researchers for finding security holes in the stable version of Chrome browser.
Dharani Govindan of Google Chrome writes in a blog post, "Wed also like to thank Arthur Gerkis, Atte Kettunen of OUSPG and miaubiz for working with us during the development cycle and preventing security regressions from ever reaching the stable channel. Various additional rewards were issued for this awesomeness."
Check out the list of bugs and amount Google paid to researcher on this page.