Add all SkPaint::Flags to Viewer app.

Originally a change to add just one more, turned into adding all of
them.

Change-Id: Ibd6b6cab75d5a018744661038cfccdb50470c234
Reviewed-on: https://skia-review.googlesource.com/127134
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
1 file changed