Minimal athena shell main

apps/shell/app/shell_main_delegate.cc

Index: apps/shell/app/shell_main_delegate.cc
diff --git a/apps/shell/app/shell_main_delegate.cc b/apps/shell/app/shell_main_delegate.cc
index 13706cda47a78edcf9960e4953b1c0c3a6a0e880..b8f835d1ae84a3e6177c0afabded275a1b090ed9 100644
--- a/apps/shell/app/shell_main_delegate.cc
+++ b/apps/shell/app/shell_main_delegate.cc
@@ -4,6 +4,7 @@
 
 #include "apps/shell/app/shell_main_delegate.h"
 
+#include "apps/shell/browser/default_shell_browser_main_delegate.h"
 #include "apps/shell/browser/shell_content_browser_client.h"
 #include "apps/shell/common/shell_content_client.h"
 #include "apps/shell/renderer/shell_content_renderer_client.h"
@@ -65,7 +66,8 @@ void ShellMainDelegate::PreSandboxStartup() {
 }
 
 content::ContentBrowserClient* ShellMainDelegate::CreateContentBrowserClient() {
-  browser_client_.reset(new apps::ShellContentBrowserClient);
+  browser_client_.reset(
+      new apps::ShellContentBrowserClient(CreateShellBrowserMainDelegate()));
   return browser_client_.get();
 }
 
@@ -75,6 +77,10 @@ ShellMainDelegate::CreateContentRendererClient() {
   return renderer_client_.get();
 }
 
+ShellBrowserMainDelegate* ShellMainDelegate::CreateShellBrowserMainDelegate() {
+  return new DefaultShellBrowserMainDelegate();
+}
+
 // static
 bool ShellMainDelegate::ProcessNeedsResourceBundle(
     const std::string& process_type) {