chromium: Backport a patch for rust 1.90

Signed-off-by: Zoltán Böszörményi <[email protected]>

Author: zboszor

meta-chromium/recipes-browser/chromium/chromium-gn.inc

@@ -26,6 +26,7 @@ SRC_URI += "\
     file://0010-Don-t-require-profiler_builtins.rlib.patch \
     file://0011-fix-check_version-Only-compare-node.js-major-version.patch \
     file://0012-chromium-fix-v4l2-compiler-error-on-arm.patch \
+    file://23d818d3c7fba4658248f17fd7b8993199242aa9.patch \
 "
 
 # ARM/AArch64-specific patches.

meta-chromium/recipes-browser/chromium/files/23d818d3c7fba4658248f17fd7b8993199242aa9.patch

@@ -0,0 +1,44 @@
+From 23d818d3c7fba4658248f17fd7b8993199242aa9 Mon Sep 17 00:00:00 2001
+From: Hans Wennborg <[email protected]>
+Date: Fri, 22 Aug 2025 10:34:47 -0700
+Subject: [PATCH] [rust] Define __rust_alloc_error_handler_should_panic_v2
+
+https://github.com/rust-lang/rust/pull/143387 made
+__rust_alloc_error_handler_should_panic a function.
+
+The new definition is needed when rolling Rust past that PR. We can
+remove the old symbol afterwards.
+
+Bug: 440481922
+Change-Id: I3340edd6d96d76de14942af67939978140430424
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6875644
+Commit-Queue: Arthur Eubanks <[email protected]>
+Reviewed-by: Arthur Eubanks <[email protected]>
+Auto-Submit: Hans Wennborg <[email protected]>
+Commit-Queue: Hans Wennborg <[email protected]>
+Cr-Commit-Position: refs/heads/main@{#1505162}
+
+Upstream-Status: Backport [https://chromiumdash.appspot.com/commit/23d818d3c7fba4658248f17fd7b8993199242aa9]
+---
+ build/rust/allocator/lib.rs | 7 +++++++
+ 1 file changed, 7 insertions(+)
+
+diff --git a/build/rust/allocator/lib.rs b/build/rust/allocator/lib.rs
+index 29b3af1274fb36..a7fa7a470f0001 100644
+--- a/build/rust/allocator/lib.rs
++++ b/build/rust/allocator/lib.rs
+@@ -90,7 +90,14 @@ mod both_allocators {
+     #[linkage = "weak"]
+     fn __rust_no_alloc_shim_is_unstable_v2() {}
+ 
++    #[rustc_std_internal_symbol]
++    #[linkage = "weak"]
++    fn __rust_alloc_error_handler_should_panic_v2() -> u8 {
++        0
++    }
++
+     // Mangle the symbol name as rustc expects.
++    // TODO(crbug.com/440481922): Remove this after rolling past https://github.com/rust-lang/rust/pull/143387
+     #[rustc_std_internal_symbol]
+     #[allow(non_upper_case_globals)]
+     #[linkage = "weak"]