I am using some of the services from Google via JSAPI (Charting and some others).
One of my clients is big university/campus (which is behind strict firewall), and they are not allowing third party gzip files to be downloaded. I had some other vendors that I used, and they were also serving their files in gzip coming from their CDN.
I was able to simply donwload their JS files and serve them myself. Client has no problem with that as long as the gzip is coming from me.
I was looking for solution to serve files from Google myself, but was unable to find a solution. Has anyone done this before? Is there a trick solution, as I would really like to continue using Google libs.