There is no need for these headers to be in include/private:
SkPaintParamsKey.h
SkShaderCodeDictionary.h
Added the new header:
src/core/SkBuiltInCodeSnippetID.h
Bug: skia:12701
Change-Id: I413e9a21bc26d5df48765d16dd7390e324006368
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/505197
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>