Revert of Inline sign in extracts gaia id from HTTP header and seeds account tracker

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

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_ENROLLMENT_SCREEN_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_ENROLLMENT_SCREEN_HANDLER_H_
 
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/callback_forward.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.h"
 #include "chrome/browser/browsing_data/browsing_data_remover.h"
 #include "chrome/browser/chromeos/login/enrollment/enrollment_screen_actor.h"
 #include "chrome/browser/chromeos/login/ui/webui_login_view.h"
 #include "chrome/browser/ui/webui/chromeos/login/base_screen_handler.h"
 #include "chrome/browser/ui/webui/chromeos/login/network_state_informer.h"
 
 namespace policy {
 class PolicyOAuth2TokenFetcher;
 }
 
 namespace chromeos {
 
+class AuthenticatedUserEmailRetriever;
 class ErrorScreensHistogramHelper;
 
 // WebUIMessageHandler implementation which handles events occurring on the
 // page, such as the user pressing the signin button.
 class EnrollmentScreenHandler
     : public BaseScreenHandler,
       public EnrollmentScreenActor,
       public BrowsingDataRemover::Observer,
       public NetworkStateInformer::NetworkStateInformerObserver,
       public WebUILoginView::FrameObserver {
@@ skipping 30 matching lines @@
   virtual void OnBrowsingDataRemoverDone() override;
 
   // Implements NetworkStateInformer::NetworkStateInformerObserver
   virtual void UpdateState(ErrorScreenActor::ErrorReason reason) override;
 
   // Implements WebUILoginView::FrameObserver
   virtual void OnFrameError(const std::string& frame_unique_name) override;
 
  private:
   // Handlers for WebUI messages.
+  void HandleRetrieveAuthenticatedUserEmail(double attempt_token);
   void HandleClose(const std::string& reason);
   void HandleCompleteLogin(const std::string& user);
   void HandleRetry();
   void HandleFrameLoadingCompleted(int status);
 
   void SetupAndShowOfflineMessage(NetworkStateInformer::State state,
                                   ErrorScreenActor::ErrorReason reason);
   void HideOfflineMessage(NetworkStateInformer::State state,
                           ErrorScreenActor::ErrorReason reason);
 
@@ skipping 44 matching lines @@
   // This intentionally lives here and not in the controller, since it needs to
   // execute requests in the context of the profile that displays the webui.
   scoped_ptr<policy::PolicyOAuth2TokenFetcher> oauth_fetcher_;
 
   // The browsing data remover instance currently active, if any.
   BrowsingDataRemover* browsing_data_remover_;
 
   // 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_;
+
   // Latest enrollment frame error.
   net::Error frame_error_;
 
   // Network state informer used to keep signin screen up.
   scoped_refptr<NetworkStateInformer> network_state_informer_;
 
   ErrorScreenActor* error_screen_actor_;
 
   scoped_ptr<ErrorScreensHistogramHelper> histogram_helper_;
 
   base::WeakPtrFactory<EnrollmentScreenHandler> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(EnrollmentScreenHandler);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_ENROLLMENT_SCREEN_HANDLER_H_