Delete activity upon window deletion

athena/main/athena_main.cc

Index: athena/main/athena_main.cc
diff --git a/athena/main/athena_main.cc b/athena/main/athena_main.cc
index 3d5408e8621c73c0bcc06ce64154bd69fcae9a82..ae5985532e9562a9b02c32213d9b39a391918cb3 100644
--- a/athena/main/athena_main.cc
+++ b/athena/main/athena_main.cc
@@ -3,6 +3,7 @@
 // found in the LICENSE file.
 
 #include "athena/content/public/web_contents_view_delegate_creator.h"
+#include "athena/extensions/public/extensions_delegate.h"
 #include "athena/main/athena_app_window_controller.h"
 #include "athena/main/athena_launcher.h"
 #include "athena/screen/public/screen_manager.h"
@@ -98,6 +99,7 @@ class AthenaBrowserMainDelegate : public extensions::ShellBrowserMainDelegate {
                            screen_manager_delegate_.get(),
                            content::BrowserThread::GetMessageLoopProxyForThread(
                                content::BrowserThread::FILE));
+    athena::ExtensionsDelegate::CreateExtensionsDelegateForShell(context);
     athena::StartAthenaSessionWithContext(context);
   }