Clean up SK_PICTURE_USE_SK_RECORD and SK_PICTURE_OPTIMIZE_SK_RECORD.

Clean up SK_PICTURE_USE_SK_RECORD and SK_PICTURE_OPTIMIZE_SK_RECORD.

This folds the code through as if they were defined, which is the explicit
state in both our build and Chrome's.

This leaves the EXPERIMENTAL_ and DEPRECATED_ hooks in to be cleaned up or
privatized later.

CQ_EXTRA_TRYBOTS=tryserver.skia:Canary-Chrome-Ubuntu13.10-Ninja-x86_64-ToT-Trybot

BUG=skia:
R=reed@google.com, robertphillips@google.com, mtklein@google.com

Author: mtklein@chromium.org

Review URL: https://codereview.chromium.org/616033002