Adding sync support for Passwords

chrome/browser/sync/engine/model_safe_worker.h

 // Copyright (c) 2006-2009 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_ENGINE_MODEL_SAFE_WORKER_H_
 #define CHROME_BROWSER_SYNC_ENGINE_MODEL_SAFE_WORKER_H_
 
 #include <map>
 #include <vector>
 
 #include "base/ref_counted.h"
 #include "chrome/browser/sync/syncable/model_type.h"
 #include "chrome/browser/sync/util/closure.h"
 #include "chrome/browser/sync/util/sync_types.h"
 
 namespace browser_sync {
 
 enum ModelSafeGroup {
   GROUP_PASSIVE = 0,   // Models that are just "passively" being synced; e.g.
                        // changes to these models don't need to be pushed to a
                        // native model.
   GROUP_UI,            // Models that live on UI thread and are being synced.
   GROUP_DB,            // Models that live on DB thread and are being synced.
   GROUP_HISTORY,       // Models that live on history thread and are being
                        // synced.
+  GROUP_PASSWORD,      // Models that live on the password thread and are
+                       // being synced.  On windows and linux, this runs on the
+                       // DB thread.
   MODEL_SAFE_GROUP_COUNT,
 };
 
 // The Syncer uses a ModelSafeWorker for all tasks that could potentially
 // modify syncable entries (e.g under a WriteTransaction). The ModelSafeWorker
 // only knows how to do one thing, and that is take some work (in a fully
 // pre-bound callback) and have it performed (as in Run()) from a thread which
 // is guaranteed to be "model-safe", where "safe" refers to not allowing us to
 // cause an embedding application model to fall out of sync with the
 // syncable::Directory due to a race.
@@ skipping 58 matching lines @@
   virtual void GetModelSafeRoutingInfo(ModelSafeRoutingInfo* out) = 0;
  protected:
   virtual ~ModelSafeWorkerRegistrar() {}
  private:
   DISALLOW_COPY_AND_ASSIGN(ModelSafeWorkerRegistrar);
 };
 
 }  // namespace browser_sync
 
 #endif  // CHROME_BROWSER_SYNC_ENGINE_MODEL_SAFE_WORKER_H_