Restored printing windows context for builds without preview.

This is code placed into separate file that was removed in https://codereview.chromium.org/478183005

Code is still used by CEF.

BUG=374321
NOTRY=true

Review URL: https://codereview.chromium.org/557663002

Cr-Commit-Position: refs/heads/master@{#293992}
6 files changed