Allow CCPR in DDL mode (take 2)

A lot of the changes to get this compiling on the
win_chromium_compile_dbg_ng bot (i.e., moving a lot of header files to
private) should be undone if that bot is ever "fixed".

Bug: skia:7988
Change-Id: I704ff793d80b18e7312048538874498824803580
Reviewed-on: https://skia-review.googlesource.com/130920
Reviewed-by: Chris Dalton <csmartdalton@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
14 files changed