Add files for public Exif interface and IFD parsing

Files remain empty so they can be added to the Chromium build.

Bug: chromium:1488376
Change-Id: Iefa942424d1f76c7252e3af7a9002d45f13a3ec6
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/762176
Reviewed-by: Leon Scroggins <scroggo@google.com>
Commit-Queue: ccameron chromium <ccameron@chromium.org>
9 files changed