Roll tools/valgrind/asan/third_party/asan_symbolize.py 227327:294450

The ASan runtime recently changed to print slice information in
stacks (https://reviews.llvm.org/D27390). The last clang roll included
that change.

The upstream asan_symbolize script was changed to be able to understand
slice information in https://reviews.llvm.org/rL291280. We need to
merge in that change to make symbolizing asan stacks work again on Mac.

This roll brings in the following changes:
https://reviews.llvm.org/rL294450
https://reviews.llvm.org/rL294303
https://reviews.llvm.org/rL291280
https://reviews.llvm.org/rL256578
https://reviews.llvm.org/rL251356
https://reviews.llvm.org/rL248962
https://reviews.llvm.org/rL247642
https://reviews.llvm.org/rL231492

BUG=686113,699062

Review-Url: https://codereview.chromium.org/2739213005
Cr-Original-Commit-Position: refs/heads/master@{#456195}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 75865e436efc89aaf076ab43b524782b70e6bd9e
1 file changed