Allow signin to continue even if sync is disabled by policy.

chrome/browser/sync/profile_sync_service.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_SYNC_PROFILE_SYNC_SERVICE_H_
 #define CHROME_BROWSER_SYNC_PROFILE_SYNC_SERVICE_H_
 
 #include <list>
 #include <string>
 
@@ skipping 387 matching lines @@
   // Returns whether sync is enabled.  Sync can be enabled/disabled both
   // at compile time (e.g., on a per-OS basis) or at run time (e.g.,
   // command-line switches).
   // Profile::IsSyncAccessible() is probably a better signal than this function.
   // This function can be called from any thread, and the implementation doesn't
   // assume it's running on the UI thread.
   static bool IsSyncEnabled();
 
   // Returns whether sync is managed, i.e. controlled by configuration
   // management. If so, the user is not allowed to configure sync.
-  bool IsManaged() const;
+  virtual bool IsManaged() const;
 
   // SigninGlobalError::AuthStatusProvider implementation.
   virtual GoogleServiceAuthError GetAuthStatus() const OVERRIDE;
 
   // syncer::UnrecoverableErrorHandler implementation.
   virtual void OnUnrecoverableError(
       const tracked_objects::Location& from_here,
       const std::string& message) OVERRIDE;
 
   // Called when a datatype wishes to disable itself due to having hit an
@@ skipping 484 matching lines @@
   syncer::WeakHandle<syncer::DataTypeDebugInfoListener> debug_info_listener_;
 
   DISALLOW_COPY_AND_ASSIGN(ProfileSyncService);
 };
 
 bool ShouldShowActionOnUI(
     const syncer::SyncProtocolError& error);
 
 
 #endif  // CHROME_BROWSER_SYNC_PROFILE_SYNC_SERVICE_H_