Remove base::FuzzedDataProvider and remaining references to it.

The class has been upstreamed to LLVM and now is being used via
third_party/libFuzzer/src/utils/FuzzedDataProvider.h.

Bug: 907103
Change-Id: I68d56d57a00cee907084bb9b7c55d7d8162d3787
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1686092
Reviewed-by: Scott Violet <sky@chromium.org>
Commit-Queue: Max Moroz <mmoroz@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#674272}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 6a9ff1a8dd382a4844346170f6d9f483a67ef12f
1 file changed