alternate ntp: tweaks and fixes for bookmark bar in ntp

chrome/browser/ui/views/detachable_toolbar_view.h

Index: chrome/browser/ui/views/detachable_toolbar_view.h
diff --git a/chrome/browser/ui/views/detachable_toolbar_view.h b/chrome/browser/ui/views/detachable_toolbar_view.h
index 13f0309162afbe780533ddc7610934314fa69e1a..4d3666a77b4892c9f47ee1a113329b034e4fbcd3 100644
--- a/chrome/browser/ui/views/detachable_toolbar_view.h
+++ b/chrome/browser/ui/views/detachable_toolbar_view.h
@@ -50,10 +50,16 @@ class DetachableToolbarView : public views::AccessiblePaneView {
                                    double* roundness,
                                    views::View* view);
 
-  // Paint the horizontal border separating the shelf/bar from the page content.
+  // Paint the horizontal border separating the shelf/bar from the page content,
+  // with COLOR_TOOLBAR_SEPARATOR.
   static void PaintHorizontalBorder(gfx::Canvas* canvas,
                                     DetachableToolbarView* view);
 
+  // Similar to PaintHorizontalBorder but with the specified |border_color|.
+  static void PaintHorizontalBorderWithColor(gfx::Canvas* canvas,
+                                             DetachableToolbarView* view,
+                                             SkColor border_color);
+
   // Paint the background of the content area (the surface behind the
   // bookmarks). |rect| is the rectangle to paint the background within.
   // |roundness| describes the roundness of the corners.