Little changes to SkAnnotation in pipe:
  - store size in the op data field rather than separately (saves 4 bytes);
  - trim out a malloc/memcpy in each of read and write;
  - remove unused enum value;
  - use the right _unpackOp function;
  - make sure we call needOpBytes().

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

Author: mtklein@google.com

Review URL: https://codereview.chromium.org/50523004

git-svn-id: http://skia.googlecode.com/svn/trunk@12007 2bbb7eff-a529-9590-31e7-b0007b416f81
3 files changed