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diff --git a/chrome/browser/sync/notifier/bridged_sync_notifier.h b/chrome/browser/sync/notifier/bridged_sync_notifier.h
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+++ b/chrome/browser/sync/notifier/bridged_sync_notifier.h
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+// 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_NOTIFIER_BRIDGED_SYNC_NOTIFIER_H_
+#define CHROME_BROWSER_SYNC_NOTIFIER_BRIDGED_SYNC_NOTIFIER_H_
+
+#include "base/compiler_specific.h"
+#include "base/memory/scoped_ptr.h"
+#include "chrome/browser/sync/notifier/sync_notifier.h"
+
+namespace sync_notifier {
+
+class ChromeSyncNotificationBridge;
+
+// A SyncNotifier implementation that wraps a ChromeSyncNotificationBridge
+// and a SyncNotifier delegate (which it takes ownership of). All SyncNotifier
+// calls are passed straight through to the delegate, with the exception of
+// AddObserver/RemoveObserver, which also result in the observer being
+// registered/deregistered with the ChromeSyncNotificationBridge.
+class BridgedSyncNotifier : public SyncNotifier {
+ public:
+  // Does not take ownership of |bridge|. Takes ownership of |delegate|.
+  BridgedSyncNotifier(ChromeSyncNotificationBridge* bridge,
+                      SyncNotifier* delegate);
+  virtual ~BridgedSyncNotifier();
+
+  // SyncNotifier implementation. Passes through all calls to the delegate.
+  // AddObserver/RemoveObserver will also register/deregister |observer| with
+  // the bridge.
+  virtual void AddObserver(SyncNotifierObserver* observer) OVERRIDE;
+  virtual void RemoveObserver(SyncNotifierObserver* observer) OVERRIDE;
+  virtual void SetUniqueId(const std::string& unique_id) OVERRIDE;
+  virtual void SetState(const std::string& state) OVERRIDE;
+  virtual void UpdateCredentials(
+      const std::string& email, const std::string& token) OVERRIDE;
+  virtual void UpdateEnabledTypes(
+      syncable::ModelTypeSet enabled_types) OVERRIDE;
+  virtual void SendNotification(
+      syncable::ModelTypeSet changed_types) OVERRIDE;
+
+ private:
+  // The notification bridge that we register the observers with.
+  ChromeSyncNotificationBridge* bridge_;
+
+  // The delegate we are wrapping.
+  scoped_ptr<SyncNotifier> delegate_;
+};
+
+}  // namespace sync_notifier
+
+#endif  // CHROME_BROWSER_SYNC_NOTIFIER_BRIDGED_SYNC_NOTIFIER_H_