Update activity indicator from a light bar to a point

ash/material_design/material_design_controller.h

Index: ash/material_design/material_design_controller.h
diff --git a/ash/material_design/material_design_controller.h b/ash/material_design/material_design_controller.h
index cd272b0706312c37023158aa95f1bf778196fb03..0ceef47f1975770daaa87893ee5f60b402a4ad20 100644
--- a/ash/material_design/material_design_controller.h
+++ b/ash/material_design/material_design_controller.h
@@ -41,6 +41,9 @@ class ASH_EXPORT MaterialDesignController {
   // Maps to "--ash-md=experimental" command line switch value.
   static bool IsMaterialExperimental();
 
+  // Returns true if Material Design features are enabled for Chrome OS shelf.
+  static bool IsShelfMaterial();
+
  private:
   friend class test::MaterialDesignControllerTestAPI;