Retrieve the authenticated user's e-mail from GAIA during SAML login

chrome/browser/ui/webui/chromeos/login/signin_screen_handler.h

Index: chrome/browser/ui/webui/chromeos/login/signin_screen_handler.h
diff --git a/chrome/browser/ui/webui/chromeos/login/signin_screen_handler.h b/chrome/browser/ui/webui/chromeos/login/signin_screen_handler.h
index 51f708a97fd4d673def97338804c7662424ed96a..fc2f296c7db8d6c8ea719a50c0ffa40c6e727539 100644
--- a/chrome/browser/ui/webui/chromeos/login/signin_screen_handler.h
+++ b/chrome/browser/ui/webui/chromeos/login/signin_screen_handler.h
@@ -8,7 +8,9 @@
 #include <set>
 #include <string>
 
+#include "base/basictypes.h"
 #include "base/callback.h"
+#include "base/compiler_specific.h"
 #include "base/containers/hash_tables.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
@@ -236,6 +238,8 @@ class SigninScreenHandler
   virtual void OnWallpaperAnimationFinished(const std::string& email) OVERRIDE;
 
  private:
+  class AuthenticatedUserEmailRetriever;
+
   enum UIState {
     UI_STATE_UNKNOWN = 0,
     UI_STATE_GAIA_SIGNIN,
@@ -363,6 +367,7 @@ class SigninScreenHandler
   void HandleFocusPod(const std::string& user_id);
   void HandleLaunchKioskApp(const std::string& app_id);
   void HandleCustomButtonClicked(const std::string& username);
+  void HandleRetrieveAuthenticatedUserEmail(double attempt_token);
 
   // Fills |user_dict| with information about |user|.
   static void FillUserDictionary(User* user,
@@ -519,6 +524,9 @@ class SigninScreenHandler
   // TODO (ygorshenin@): remove this dependency.
   GaiaScreenHandler* gaia_screen_handler_;
 
+  // Helper that retrieves the authenticated user's e-mail address.
+  scoped_ptr<AuthenticatedUserEmailRetriever> email_retriever_;
+
   DISALLOW_COPY_AND_ASSIGN(SigninScreenHandler);
 };