Sync: Refactor the ProfileSyncService and sync setup flow to remove use of WebUI from PSS.

chrome/browser/sync/sync_setup_wizard.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_SYNC_SYNC_SETUP_WIZARD_H_
 #define CHROME_BROWSER_SYNC_SYNC_SETUP_WIZARD_H_
 #pragma once
 
 #include "base/basictypes.h"
 
@@ skipping 16 matching lines @@
     // 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,
-    // The panic switch.  Something went terribly wrong during setup and we
-    // can't recover.
+    // An error has occurred in the backend. The next appropriate step is picked
+    // based on which error has occurred.
+    NONFATAL_ERROR,

[tim (not reviewing), 2011/06/09 14:50:36]

Please add unittests for this new state.

+    // 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 spinny throbber.
+    // Loading screen with throbber.
     SETTING_UP,
     // A catch-all done case for any setup process.
     DONE
   };
 
   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 ran
@@ skipping 23 matching lines @@
   static bool IsTerminalState(State state);
 
   ProfileSyncService* service_;
 
   SyncSetupFlowContainer* flow_container_;
 
   DISALLOW_COPY_AND_ASSIGN(SyncSetupWizard);
 };
 
 #endif  // CHROME_BROWSER_SYNC_SYNC_SETUP_WIZARD_H_