From the enter-passphrase screen in sync setup, canceling should only disable...

chrome/browser/sync/sync_setup_flow.h

 // Copyright (c) 2006-2008 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_SYNC_SYNC_SETUP_FLOW_H_
 #define CHROME_BROWSER_SYNC_SYNC_SETUP_FLOW_H_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 93 matching lines @@
                            const std::string& password,
                            const std::string& captcha,
                            const std::string& access_code);
 
   void OnUserConfigured(const SyncConfiguration& configuration);
 
   // The 'passphrase' screen is used when the user is prompted to enter
   // an existing passphrase.
   void OnPassphraseEntry(const std::string& passphrase);
 
+  // The user canceled the passphrase entry without supplying a passphrase.
+  void OnPassphraseCancel();
+
   // The 'first passphrase' screen is for users migrating from a build
   // without passwords, who are prompted to make a passphrase choice.
   void OnFirstPassphraseEntry(const std::string& option,
                               const std::string& passphrase);
 
   void OnGoToDashboard();
 
  private:
   FRIEND_TEST_ALL_PREFIXES(SyncSetupWizardTest, InitialStepLogin);
   FRIEND_TEST_ALL_PREFIXES(SyncSetupWizardTest, ChooseDataTypesSetsPrefs);
@@ skipping 25 matching lines @@
   SyncSetupWizard::State current_state_;
   SyncSetupWizard::State end_state_;  // The goal.
 
   // Time that the GAIA_LOGIN step was received.
   base::TimeTicks login_start_time_;
 
   // The handler needed for the entire flow.
   FlowHandler* flow_handler_;
   mutable bool owns_flow_handler_;
 
-  // We need this to write the sentinel "setup completed" pref.
+  // We need this to propagate back all user settings changes.
   ProfileSyncService* service_;
 
   // Currently used only on OS X
   // TODO(akalin): Add the necessary support to the other OSes and use
   // this for them.
   gfx::NativeWindow html_dialog_window_;
 
   DISALLOW_COPY_AND_ASSIGN(SyncSetupFlow);
 };
 
@@ skipping 23 matching lines @@
   FlowHandler()  {}
   virtual ~FlowHandler() {}
 
   // DOMMessageHandler implementation.
   virtual void RegisterMessages();
 
   // Callbacks from the page.
   void HandleSubmitAuth(const ListValue* args);
   void HandleConfigure(const ListValue* args);
   void HandlePassphraseEntry(const ListValue* args);
+  void HandlePassphraseCancel(const ListValue* args);
   void HandleFirstPassphrase(const ListValue* args);
   void HandleGoToDashboard(const ListValue* args);
 
   // These functions control which part of the HTML is visible.
   void ShowGaiaLogin(const DictionaryValue& args);
   void ShowGaiaSuccessAndClose();
   void ShowGaiaSuccessAndSettingUp();
   void ShowConfigure(const DictionaryValue& args);
   void ShowPassphraseEntry(const DictionaryValue& args);
   void ShowFirstPassphrase(const DictionaryValue& args);
   void ShowSettingUp();
   void ShowSetupDone(const std::wstring& user);
   void ShowFirstTimeDone(const std::wstring& user);
 
   void set_flow(SyncSetupFlow* flow) {
     flow_ = flow;
   }
 
  private:
   void ExecuteJavascriptInIFrame(const std::wstring& iframe_xpath,
                                  const std::wstring& js);
   SyncSetupFlow* flow_;
   DISALLOW_COPY_AND_ASSIGN(FlowHandler);
 };
 
 #endif  // CHROME_BROWSER_SYNC_SYNC_SETUP_FLOW_H_