contrib/tweaks/visual/hide-toolbar-infobar-separator.patch

## This patch hides the separator at the bottom of the toolbar when no infobars are present.

--- a/chrome/browser/ui/views/frame/browser_view_layout.cc
+++ b/chrome/browser/ui/views/frame/browser_view_layout.cc
@@ -466,8 +466,9 @@ int BrowserViewLayout::LayoutBookmarkAnd
 
   if (delegate_->IsContentsSeparatorEnabled() &&
       (toolbar_->GetVisible() || bookmark_bar_) && top > 0) {
-    SetViewVisibility(contents_separator_, true);
+    SetViewVisibility(contents_separator_, infobar_container_->children().size() > 1);
     const int separator_height =
+        infobar_container_->children().size() < 2 ? 0 :
         contents_separator_->GetPreferredSize().height();
     contents_separator_->SetBounds(vertical_layout_rect_.x(), top,
                                    vertical_layout_rect_.width(),