Remove Skia's use of the default SkPicture constructor and multi-clone

This cannot be landed until (Chrome: Switch to one-at-a-time SkPicture::clone interface - https://codereview.chromium.org/380323002/) has landed.

R=mtklein@google.com
TBR=reed@google.com

Review URL: https://codereview.chromium.org/388833003
7 files changed