This is needed since there are currently no files in the include dir, and
some of our tests that check all the public headers complain if it doesn't
exists.
Bug: skia:6896
Change-Id: I3f70293b64b5096a55d6ba0ea5f4e6ebbfd7f62b
Reviewed-on: https://skia-review.googlesource.com/28003
Reviewed-by: Brian Salomon <bsalomon@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Reviewed-by: Eric Boren <borenet@google.com>
Commit-Queue: Greg Daniel <egdaniel@google.com>
