Fix HttpProxy.

A key bit of code was lost in change 38/25338/5 (2009/09/17 change
of RequestQueue.java) which caused us to not pick up proxy settings.
Putting it back.

bug:2364475
Change-Id: I1e79858f64d8e793a966ef8e6f7a0d3f2a02251f
1 file changed