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

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

Index: chrome/browser/ui/webui/chromeos/login/enrollment_screen_handler.h
diff --git a/chrome/browser/ui/webui/chromeos/login/enrollment_screen_handler.h b/chrome/browser/ui/webui/chromeos/login/enrollment_screen_handler.h
index e1f68aa1416c1371f2614f2566b3b7a4fe1e3223..ad64736094082e5e7a79d9cbab0a1cdaa3f3df23 100644
--- a/chrome/browser/ui/webui/chromeos/login/enrollment_screen_handler.h
+++ b/chrome/browser/ui/webui/chromeos/login/enrollment_screen_handler.h
@@ -22,6 +22,8 @@ class PolicyOAuth2TokenFetcher;
 
 namespace chromeos {
 
+class AuthenticatedUserEmailRetriever;
+
 // WebUIMessageHandler implementation which handles events occurring on the
 // page, such as the user pressing the signin button.
 class EnrollmentScreenHandler
@@ -61,6 +63,7 @@ class EnrollmentScreenHandler
 
  private:
   // Handlers for WebUI messages.
+  void HandleRetrieveAuthenticatedUserEmail(double attempt_token);
   void HandleClose(const std::string& reason);
   void HandleCompleteLogin(const std::string& user);
   void HandleRetry();
@@ -111,6 +114,9 @@ class EnrollmentScreenHandler
   // The callbacks to invoke after browsing data has been cleared.
   std::vector<base::Closure> auth_reset_callbacks_;
 
+  // Helper that retrieves the authenticated user's e-mail address.
+  scoped_ptr<AuthenticatedUserEmailRetriever> email_retriever_;
+
   DISALLOW_COPY_AND_ASSIGN(EnrollmentScreenHandler);
 };