Start moving signin code out of browser/sync.

chrome/browser/sync/sync_setup_wizard.h

-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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_SYNC_SYNC_SETUP_WIZARD_H_
 #define CHROME_BROWSER_SYNC_SYNC_SETUP_WIZARD_H_
 #pragma once
 
 #include "base/basictypes.h"
 
 class SyncSetupFlow;
 class SyncSetupFlowContainer;
 class SyncSetupFlowHandler;
 
 class ProfileSyncService;
 
 class SyncSetupWizard {
  public:
   enum State {
-    // Show the Google Account login UI.
-    GAIA_LOGIN = 0,
-    // Show the Gaia OAuth login UI.
-    // TODO(rickcam): After Sync with OAuth works, revisit removing this state.
-    OAUTH_LOGIN,
-    // A login attempt succeeded.  This will wait for an explicit transition
-    // (via Step) to the next state.
-    GAIA_SUCCESS,
-    // Show the screen that confirms everything will be synced.
     SYNC_EVERYTHING,
     // Show the screen that lets you configure sync.
     // There are two tabs:
     //  Data Types --
     //   Choose either "Keep everything synced" or
     //   "Choose which data types to sync", and checkboxes for each data type.
     //  Encryption --
     //   Choose what to encrypt and whether to use a passphrase.
     CONFIGURE,
     // Show the screen that prompts for your passphrase
     ENTER_PASSPHRASE,
-    // An error has occurred in the backend. The next appropriate step is picked
-    // based on which error has occurred.
-    NONFATAL_ERROR,
     // The panic switch. Something went terribly wrong during setup and we can't
     // recover.
     FATAL_ERROR,
-    // The client can't set up sync at the moment due to a concurrent operation
-    // to clear cloud data being in progress on the server.
-    SETUP_ABORTED_BY_PENDING_CLEAR,
     // Loading screen with throbber.
     SETTING_UP,
     // A catch-all done case for any setup process.
     DONE,
-    // Exit the wizard.
+    // Exit the wizard (for example, if the user clears the data on the
+    // dashboard while the wizard is open).
     ABORT,
   };
 
   explicit SyncSetupWizard(ProfileSyncService* service);
   ~SyncSetupWizard();
 
   // Advances the wizard to the specified state if possible, or opens a
   // new dialog starting at |advance_state|.  If the wizard has never run
   // through to completion, it will always attempt to do so.  Otherwise, e.g
   // for a transient auth failure, it will just run as far as is necessary
   // based on |advance_state| (so for auth failure, up to GAIA_SUCCESS).
   void Step(State advance_state);
 
   // Whether or not a dialog is currently showing.  Useful to determine
   // if various buttons in the UI should be enabled or disabled.
   bool IsVisible() const;
 
-  // Returns either GAIA_LOGIN or OAUTH_LOGIN depending on which
-  // authentication scheme is in force.
-  static State GetLoginState();
-
   // Focus the dialog if it is already open.  Does nothing if the dialog is
   // not visible.
   void Focus();
 
   // Attaches |handler| to the flow contained in |flow_container_|. Returns NULL
   // if the flow does not exist or if an existing handler is already attached to
   // the flow.
   SyncSetupFlow* AttachSyncSetupHandler(SyncSetupFlowHandler* handler);
 
  private:
   ProfileSyncService* service_;
 
   SyncSetupFlowContainer* flow_container_;
 
   DISALLOW_COPY_AND_ASSIGN(SyncSetupWizard);
 };
 
 #endif  // CHROME_BROWSER_SYNC_SYNC_SETUP_WIZARD_H_