All SkAnnotations are no-draw.  Propose we fold that through.

BUG=
R=edisonn@google.com, reed@google.com

Author: mtklein@google.com

Review URL: https://codereview.chromium.org/48523008

git-svn-id: http://skia.googlecode.com/svn/trunk@12008 2bbb7eff-a529-9590-31e7-b0007b416f81
4 files changed