IPRO with LoadFromFile on a resource that is already fully optimized severs cc:max-age=300.

[GoogleCodeExporter]

What steps will reproduce the problem?
1. use ModPagespeedLoadFromFile for static files
2. request any of these static files with browser and inspect caching headers 
or analyze page with pagespeed insight

What is the expected output? What do you see instead?
expected: ressource delivered with caching headers set to values defined for 
this mime-type.
instead: Cache-Control  max-age=300, Expires in 5 minutes...

What version of the product are you using (please check X-Mod-Pagespeed
header)?
mod-pagespeed-beta 1.9.32.1-4238

On what operating system?
Centos 6.5

Which version of Apache?
2.2.15

Which MPM?
prefork

Original issue reported on code.google.com by [email protected] on 19 Sep 2014 at 12:00