Roll buildtools/third_party/libc++abi/trunk/ 8d21803b9..d4760c0af (2 commits)

https://chromium.googlesource.com/external/github.com/llvm/llvm-project/libcxxabi.git/+log/8d21803b9076..d4760c0af99c

Created with:
  roll-dep buildtools/third_party/libc++abi/trunk

Change-Id: I9a9e9b815c63251cb43b5ae988604db23ab37304
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/110830
Auto-Submit: Lei Zhang <thestig@chromium.org>
Commit-Queue: Nigi <nigi@chromium.org>
Reviewed-by: Nigi <nigi@chromium.org>
diff --git a/DEPS b/DEPS
index 6e1fd6c..1e76665 100644
--- a/DEPS
+++ b/DEPS
@@ -128,7 +128,7 @@
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling libc++abi
   # and whatever else without interference from each other.
-  'libcxxabi_revision': '8d21803b9076b16d46c32e2f10da191ee758520c',
+  'libcxxabi_revision': 'd4760c0af99ccc9bce077960d5ddde4d66146c05',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling libpng
   # and whatever else without interference from each other.