Make panel window's header color customizable in Ash.

chrome/browser/ui/views/apps/chrome_native_app_window_views_aura.cc

Index: chrome/browser/ui/views/apps/chrome_native_app_window_views_aura.cc
diff --git a/chrome/browser/ui/views/apps/chrome_native_app_window_views_aura.cc b/chrome/browser/ui/views/apps/chrome_native_app_window_views_aura.cc
index 2adfb24ed68646ce6501c379c1d03ecd05eb41cb..5c6dad702665aba5a379da81f76f4301eb7c09d9 100644
--- a/chrome/browser/ui/views/apps/chrome_native_app_window_views_aura.cc
+++ b/chrome/browser/ui/views/apps/chrome_native_app_window_views_aura.cc
@@ -325,9 +325,11 @@ ChromeNativeAppWindowViewsAura::CreateNonClientFrameView(
       return CreateNonStandardAppFrame();
 
     if (app_window()->window_type_is_panel()) {
-      views::NonClientFrameView* frame_view =
+      ash::PanelFrameView* frame_view =
           new ash::PanelFrameView(widget, ash::PanelFrameView::FRAME_ASH);
       frame_view->set_context_menu_controller(this);
+      if (HasFrameColor())
+        frame_view->SetFrameColors(ActiveFrameColor(), InactiveFrameColor());
       return frame_view;
     }