Do not show the activity widget in ActivityManager::AddActivity

athena/activity/activity.cc

Index: athena/activity/activity.cc
diff --git a/athena/activity/activity.cc b/athena/activity/activity.cc
index 1f23837a7db4b2c72f129c6e43f1b756e9920ab9..f09428d8cfe1ebffaf73c043db07a0a4aa199f4b 100644
--- a/athena/activity/activity.cc
+++ b/athena/activity/activity.cc
@@ -5,10 +5,19 @@
 #include "athena/activity/public/activity.h"
 
 #include "athena/activity/public/activity_manager.h"
+#include "ui/views/widget/widget.h"
 
 namespace athena {
 
 // static
+void Activity::Show(Activity* activity) {
+  views::Widget* widget =
+      views::Widget::GetWidgetForNativeWindow(activity->GetWindow());
+  DCHECK(widget);
+  widget->Show();
+}
+
+// static
 void Activity::Delete(Activity* activity) {
   ActivityManager::Get()->RemoveActivity(activity);
   delete activity;