Turn on preprocessing by default

The idea is to commit this late at night and then revert it after all the perf bots are running. It should only effect the GPU configs.

R=bsalomon@google.com

Author: robertphillips@google.com

Review URL: https://codereview.chromium.org/299033002

git-svn-id: http://skia.googlecode.com/svn/trunk@14860 2bbb7eff-a529-9590-31e7-b0007b416f81
1 file changed