Revert "Unpremultiply SkBitmaps for PDF output"

This reverts commit 16a6c9d28c8ef6f827d50ef258005fa5ec971bd9.

Seems to be breaking all of the windows debug bots in GM.

git-svn-id: http://skia.googlecode.com/svn/trunk@10737 2bbb7eff-a529-9590-31e7-b0007b416f81
3 files changed