Chromium changes: https://chromium.googlesource.com/chromium/src/+/a897a4e519ebb2a6480cda54f2e42f70dd837ede commit a897a4e519ebb2a6480cda54f2e42f70dd837ede Author: Charles Hager <clhager@google.com> Date: Wed Aug 27 10:31:50 2025 -0700 Have MenuButtonCoordinator extend ToolbarChildButton Bug: 427260734 Change-Id: I27c0e074fa78f4f0e91a7300700c3ec3c0ca2282 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6886473 Reviewed-by: Sirisha Kavuluru <skavuluru@google.com> Commit-Queue: Charles Hager <clhager@google.com> Cr-Commit-Position: refs/heads/main@{#1507190}