I was recently doing a Chromium build with GCC, which threw a -Wmisleading-indentation warning when compiling third_party/blink/renderer/modules/accessibility/ax_menu_list_popup.cc:

  void AXMenuListPopup::DidHide() {
    // ...
    if (ActiveDescendant())
      cache.PostNotification(this, AXObjectCacheImpl::kAXChildrenChanged);
      cache.PostNotification(ActiveDescendant(),
                             AXObjectCacheImpl::kAXMenuListItemUnselected);
  }

The first call to PostNotification() didn't exist until https://chromium-review.googlesource.com/c/chromium/src/+/769674, and now the second one is made even if the if clause doesn't evaluate to true. Since I'm not familiar with the code, I'm filing the bug so that someone else can decide whether the the code just needs braces or if things are working as intended and the code needs to be reindented.