@@ -141,3 +141,4 @@ feat_add_signals_when_embedder_cleanup_callbacks_run_for.patch
 feat_separate_content_settings_callback_for_sync_and_async_clipboard.patch
 fix_win32_synchronous_spellcheck.patch
 chore_remove_conflicting_allow_unsafe_libc_calls.patch
+fix_linter_error.patch
@@ -0,0 +1,43 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Charles Kerr <charles@charleskerr.com>
+Date: Thu, 6 Mar 2025 17:06:49 -0600
+Subject: fix: linter error
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+fix: linter error
+
+This is showing up in an eslint build step in Electron:
+
+> /__w/electron/electron/src/out/Default/gen/ui/webui/resources/cr_elements/preprocessed/cr_menu_selector/cr_menu_selector.ts
+>   77:23  error  This assertion is unnecessary since the receiver accepts the original type of the expression  @typescript-eslint/no-unnecessary-type-assertion
+>
+> ✖ 1 problem (1 error, 0 warnings)
+>   1 error and 0 warnings potentially fixable with the `--fix` option.
+
+However, removing the assertion causes a typescript build failure:
+
+> gen/ui/webui/resources/cr_elements/preprocessed/cr_menu_selector/cr_menu_selector.ts:77:23 - error TS2345: Argument of type 'HTMLElement | null' is not assignable to parameter of type 'HTMLElement'.
+>   Type 'null' is not assignable to type 'HTMLElement'.
+>
+> 77         items.indexOf(this.querySelector<HTMLElement>(':focus'));
+>                          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+So I think the two different steps may be picking up typescript definitions.
+
+This patch should be removed after the issue is tracked down
+andfixed in a followup task.
+
+diff --git a/ui/webui/resources/cr_elements/cr_menu_selector/cr_menu_selector.ts b/ui/webui/resources/cr_elements/cr_menu_selector/cr_menu_selector.ts
+index 0a83b8041b8201c95442e680c77555d4c11bc06a..abdb8e9bfbbfb1fce6fa38e226e50a35477e49a2 100644
+--- a/ui/webui/resources/cr_elements/cr_menu_selector/cr_menu_selector.ts
++++ b/ui/webui/resources/cr_elements/cr_menu_selector/cr_menu_selector.ts
+@@ -74,6 +74,7 @@ export class CrMenuSelector extends CrMenuSelectorBase {
+     const items = this.getAllFocusableItems_();
+     assert(items.length >= 1);
+     const currentFocusedIndex =
++        // eslint-disable-next-line @typescript-eslint/no-unnecessary-type-assertion
+         items.indexOf(this.querySelector<HTMLElement>(':focus')!);
+ 
+     let newFocusedIndex = currentFocusedIndex;