Roll libc++ from 6f6dc922b8e0 to 024b5251a7d9 (2 revisions)

https://chromium.googlesource.com/external/github.com/llvm/llvm-project/libcxx.git/+log/6f6dc922b8e0..024b5251a7d9

2025-04-09 [email protected] [libc++] Remove _LIBCPP_TEMPLATE_VIS (#134885)
2025-04-09 [email protected] [libc++][C++03] Remove headers which don't provide anything (#134044)

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https://autoroll.skia.org/r/libcxx-chromium
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Tbr: [email protected],[email protected]
Change-Id: I64b05cffed2fa2af54dc9d7b7e22abf39087ea02
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6444797
Commit-Queue: chromium-autoroll <[email protected]>
Bot-Commit: chromium-autoroll <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1445112}
NOKEYCHECK=True
GitOrigin-RevId: cd6f258ed180842824a0ebb35b4ec7e4ddb90255

Author: chromium-autoroll

deps_revisions.gni

@@ -5,5 +5,5 @@
 declare_args() {
   # Used to cause full rebuilds on libc++ rolls. This should be kept in sync
   # with the libcxx_revision var in //DEPS.
-  libcxx_revision = "6f6dc922b8e0c96b7cd49873c7bdcdd46219a55c"
+  libcxx_revision = "024b5251a7d927941cb93cbb6f811bcb13ec5ba4"
 }