That's not a very apt analogy. Google is perceived as a benevolent or neutral service bordering on a public utility. They collect vast amounts of personal information / intelligence because people willingly give it to them.
Google assisting in drone strikes is like the military using the electrical grid to electrocute people in their homes or delivering lethal poisons via the Starbucks Rewards program.
What if your favorite cereal brand started participating in assassinations? It's not inconceivable to deliver poison that way. What if, due to a software error, instead of terrorist #41253 your daughter was delivered poisoned Cheerios.
There is a huge ethical gap between private arms manufacturing and a non-militarized company with this much reach participating in a non-wartime, "preventative" military campaign.