Implement a policy to autologin a public account.

chrome/browser/chromeos/login/webui_screen_locker.h

Index: chrome/browser/chromeos/login/webui_screen_locker.h
diff --git a/chrome/browser/chromeos/login/webui_screen_locker.h b/chrome/browser/chromeos/login/webui_screen_locker.h
index f1ed782709da86647d840c5d0000bc87494e6119..7535ce943c21071a5bc34288922139888ac82733 100644
--- a/chrome/browser/chromeos/login/webui_screen_locker.h
+++ b/chrome/browser/chromeos/login/webui_screen_locker.h
@@ -73,6 +73,7 @@ class WebUIScreenLocker : public WebUILoginView,
                      const std::string& password) OVERRIDE;
   virtual void LoginAsRetailModeUser() OVERRIDE;
   virtual void LoginAsGuest() OVERRIDE;
+  virtual void OnSigninScreenReady() OVERRIDE;

[bartfab (slow), 2013/02/25 16:51:23]

The order of these method overrides should match the order of their declarations
in LoginDisplay::Delegate.

[dconnelly, 2013/02/26 18:04:15]

Done.

   virtual void MigrateUserData(const std::string& old_password) OVERRIDE;
   virtual void LoginAsPublicAccount(const std::string& username) OVERRIDE;
   virtual void OnUserSelected(const std::string& username) OVERRIDE;