We won't be sending url strings from Firefox, but we'll still need to identify a tile as being enhanced. The server was noting enhanced tiles as submitted tiles that include both id and url, so we'll just send "" for the url.
Created attachment 8483911 [details] [diff] [review] v1
Comment on attachment 8483911 [details] [diff] [review] v1 Let's avoid collecting data that we don't need. Approved for beta and aurora. Please get this landed for beta2, which goes to build on Mon, Sep 8.
Assigning this to Cornel for an initial assessment and verification.
I consider this issue doesn't need manual testing so I'll mark it accordingly. Ed, please correct me if I'm wrong and if you think it needs manual coverage.