[Athena] Add status icons and system time to the centered home card

athena/system/public/system_ui.h

Index: athena/system/public/system_ui.h
diff --git a/athena/system/public/system_ui.h b/athena/system/public/system_ui.h
index 4cd04d02106b3a7a6a47689066275d3dace3047f..61357b1ddb4618ba6883568aadedd5acc8fdd91c 100644
--- a/athena/system/public/system_ui.h
+++ b/athena/system/public/system_ui.h
@@ -24,6 +24,11 @@ namespace athena {
 
 class ATHENA_EXPORT SystemUI {
  public:
+  enum ColorScheme {
+    COLOR_SCHEME_LIGHT,
+    COLOR_SCHEME_DARK
+  };
+
   // Creates and deletes the singleton object of the SystemUI implementation.
   static SystemUI* Create(scoped_refptr<base::TaskRunner> io_task_runner);
   static SystemUI* Get();
@@ -35,10 +40,10 @@ class ATHENA_EXPORT SystemUI {
   virtual void SetBackgroundImage(const gfx::ImageSkia& image) = 0;
 
   // Creates a view which displays the time.
-  virtual views::View* CreateTimeView() = 0;
+  virtual views::View* CreateTimeView(ColorScheme color_scheme) = 0;
 
   // Creates a view which displays status icons and debug information.
-  virtual views::View* CreateStatusIconView() = 0;
+  virtual views::View* CreateStatusIconView(ColorScheme color_scheme) = 0;
 };
 
 }  // namespace athena