Minimal athena shell main

apps/shell/app/shell_main.cc

Index: apps/shell/app/shell_main.cc
diff --git a/apps/shell/app/shell_main.cc b/apps/shell/app/shell_main.cc
index cd44b99d7c9d504fb4263040e1d802753df97be2..99f5ea5e9a96978a3c7c6cb3931482046562d3ba 100644
--- a/apps/shell/app/shell_main.cc
+++ b/apps/shell/app/shell_main.cc
@@ -3,6 +3,7 @@
 // found in the LICENSE file.
 
 #include "apps/shell/app/shell_main_delegate.h"
+#include "apps/shell/browser/default_shell_browser_main_delegate.h"
 #include "content/public/app/content_main.h"
 
 #if defined(OS_WIN)
@@ -15,7 +16,8 @@ int APIENTRY wWinMain(HINSTANCE instance, HINSTANCE, wchar_t*, int) {
 #else
 int main(int argc, const char** argv) {
 #endif
-  apps::ShellMainDelegate delegate;
+  apps::DefaultShellBrowserMainDelegate browser_main_delegate;
+  apps::ShellMainDelegate delegate(&browser_main_delegate);
   content::ContentMainParams params(&delegate);
 
 #if defined(OS_WIN)