From cf193b279b47f367b9d5199644d304fa11aa1e6c Mon Sep 17 00:00:00 2001
From: Shelley Vohr <shelley.vohr@gmail.com>
Date: Thu, 3 Jul 2025 14:41:19 +0200
Subject: [PATCH] fix: crash on source capture with empty thumbnail size
 (#47641)

---
 shell/browser/api/electron_api_desktop_capturer.cc | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/shell/browser/api/electron_api_desktop_capturer.cc b/shell/browser/api/electron_api_desktop_capturer.cc
index a2a05bb102bb..f99357a7c62a 100644
--- a/shell/browser/api/electron_api_desktop_capturer.cc
+++ b/shell/browser/api/electron_api_desktop_capturer.cc
@@ -236,7 +236,8 @@ DesktopCapturer::DesktopListListener::~DesktopListListener() = default;
 
 void DesktopCapturer::DesktopListListener::OnDelegatedSourceListSelection() {
   if (have_thumbnail_) {
-    std::move(update_callback_).Run();
+    content::GetUIThreadTaskRunner({})->PostTask(FROM_HERE,
+                                                 std::move(update_callback_));
   } else {
     have_selection_ = true;
   }
@@ -249,7 +250,8 @@ void DesktopCapturer::DesktopListListener::OnSourceThumbnailChanged(int index) {
     have_selection_ = false;
 
     // PipeWire returns a single source, so index is not relevant.
-    std::move(update_callback_).Run();
+    content::GetUIThreadTaskRunner({})->PostTask(FROM_HERE,
+                                                 std::move(update_callback_));
   } else {
     have_thumbnail_ = true;
   }