pagespeed/ngx_pagespeed — pull request #536 by jeffkaufman (2013-10-04 21:51:11+00:00)
Title: logging: restore call to log_message_handler::Install()

I missed this when moving shared components to `SystemRewriteDriverFactory`; this call used to be in `NgxRewriteDriverFactory::RootInit`. Without it we only log `VLOG(0)`, not `VLOG(1)` and `VLOG(2)` the way Apache does.

Fixes #518.