This splits the playback functionality out of SkPictureData. The old SkPictureData::draw method is pulled out along
with its supporting functions as verbatim as possible. Some follow on CLs will be required to:
re-enable profiling in the debugger (and remove the vestiges of SkTimedPicture)
re-enable display of command offsets in the picture (this should probably wait until we've switched to SkRecord though)
Clean up CachedOperationList (maybe fuse with SkPicture::OperationList)
Split SkPicturePlayback into a base class and two derived classes
Implement parallel version of GatherGPUInfo for SkRecord
Landing this is blocked on removing Android's use of the abortPlayback entry point.
R=mtklein@google.com, reed@google.com
Author: robertphillips@google.com
Review URL: https://codereview.chromium.org/377623002
