WHY WAIT? Delete your Google account when you die.

More seriously:

Think about all the photos you have stored that your family and friends would like to have — or personal account information that your beneficiary will need to know about in the event of your death. There may be important files that you have stored on your Google Drive that someone will need access to. For those reasons, it’s a good idea to take five minutes and let Google know what to do with your data.

Instructions at the link.