Roll buildtools and libc++

Roll buildtools/ 3d0ed6dea..469b4146c (27 commits)

https://chromium.googlesource.com/chromium/src/buildtools.git/+log/3d0ed6dead27..469b4146c501

Created with:
  roll-dep buildtools

Roll third_party/libc++/src/ eb760140f..74dd76082 (78 commits)

https://chromium.googlesource.com/external/github.com/llvm/llvm-project/libcxx.git/+log/eb760140f382..74dd76082606

Created with:
  roll-dep third_party/libc++/src

Change-Id: I1407421f3f59948e3ac5d0bc98666f797ea6c7ac
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/127630
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
diff --git a/DEPS b/DEPS
index aeb013b..9edfe74 100644
--- a/DEPS
+++ b/DEPS
@@ -82,7 +82,7 @@
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling buildtools
   # and whatever else without interference from each other.
-  'buildtools_revision': '3d0ed6dead278a4c5cf2fecc4e3b8cd19b0a8369',
+  'buildtools_revision': '469b4146c5017c7a863dc795dd71d91b92326a57',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling catapult
   # and whatever else without interference from each other.
@@ -156,7 +156,7 @@
   # and whatever else without interference from each other.
   # If you change this, also update the libc++ revision in
   # //buildtools/deps_revisions.gni.
-  'libcxx_revision': 'eb760140f3825eec128ac24306e95469a9df4e3e',
+  'libcxx_revision': '74dd760826063f15ce4d373b31bc34d1c65e41c2',
   # 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.