Add Legacy fuzz reproducer

Make FuzzEnum always use uint32_t to make it consistent
(we were seeing some Windows setups have underlying type return
int and not unsigned int that we saw on Linux)

Bug: 897455
Change-Id: Ia8c97e59bb498d959a9a30abcb61731f4bd145cf
Reviewed-on: https://skia-review.googlesource.com/c/164240
Reviewed-by: Cary Clark <caryclark@google.com>
Commit-Queue: Kevin Lubick <kjlubick@google.com>
3 files changed