Update activity indicator from a light bar to a point

ash/material_design/material_design_controller.cc

Index: ash/material_design/material_design_controller.cc
diff --git a/ash/material_design/material_design_controller.cc b/ash/material_design/material_design_controller.cc
index de6bab83290d20b47ea101f9ddf3b47d5b3edfb1..f263a8517e1007c6d8d016b47e6e7cf591e32be7 100644
--- a/ash/material_design/material_design_controller.cc
+++ b/ash/material_design/material_design_controller.cc
@@ -54,6 +54,11 @@ bool MaterialDesignController::IsMaterialExperimental() {
 }
 
 // static
+bool MaterialDesignController::IsShelfMaterial() {
+  return MaterialDesignController::IsMaterialExperimental();
+}
+
+// static
 MaterialDesignController::Mode MaterialDesignController::mode() {
   return mode_;
 }