[Sync Setup UI] Separate stepping the SyncSetupWizard from syncSetup page navigation.

chrome/browser/ui/webui/sync_setup_handler.h

 // Copyright (c) 2011 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_SYNC_SETUP_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_SYNC_SETUP_HANDLER_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/net/gaia/gaia_oauth_consumer.h"
 #include "chrome/browser/net/gaia/gaia_oauth_fetcher.h"
@@ skipping 63 matching lines @@
   void HandleSubmitAuth(const base::ListValue* args);
   void HandleConfigure(const base::ListValue* args);
   void HandlePassphraseEntry(const base::ListValue* args);
   void HandlePassphraseCancel(const base::ListValue* args);
   void HandleAttachHandler(const base::ListValue* args);
   void HandleShowErrorUI(const base::ListValue* args);
   void HandleShowSetupUI(const base::ListValue* args);
 
   SyncSetupFlow* flow() { return flow_; }
 
+  // Subclasses must implement to step the SyncSetupWizard to the correct state
+  // before showing the Setup UI.
+  virtual void StepWizardForShowSetupUI() = 0;
+
   // Subclasses must implement this to show the setup UI that's appropriate
   // for the page this is contained in.
   virtual void ShowSetupUI() = 0;
 
  private:
   // If a wizard already exists, focus it and return true.
   bool FocusExistingWizard();
 
   // Invokes the javascript call to close the setup overlay.
   void CloseOverlay();
@@ skipping 10 matching lines @@
   // Weak reference.
   SyncSetupFlow* flow_;
   scoped_ptr<GaiaOAuthFetcher> oauth_login_;
   // Weak reference to the profile manager.
   ProfileManager* const profile_manager_;
 
   DISALLOW_COPY_AND_ASSIGN(SyncSetupHandler);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_SYNC_SETUP_HANDLER_H_