Rename InvalidationVersionTracker to InvalidationStateTracker in preparation

sync/notifier/non_blocking_invalidation_notifier.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.
 //
 // An implementation of SyncNotifier that wraps InvalidationNotifier
 // on its own thread.
 
 #ifndef SYNC_NOTIFIER_NON_BLOCKING_INVALIDATION_NOTIFIER_H_
 #define SYNC_NOTIFIER_NON_BLOCKING_INVALIDATION_NOTIFIER_H_
 #pragma once
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "base/observer_list.h"
 #include "jingle/notifier/base/notifier_options.h"
-#include "sync/notifier/invalidation_version_tracker.h"
+#include "sync/notifier/invalidation_state_tracker.h"
 #include "sync/notifier/sync_notifier.h"
 #include "sync/notifier/sync_notifier_observer.h"
 #include "sync/util/weak_handle.h"
 
 namespace base {
 class MessageLoopProxy;
 }
 
 namespace sync_notifier {
 
 class NonBlockingInvalidationNotifier
     : public SyncNotifier,
       public SyncNotifierObserver {
  public:
-  // |invalidation_version_tracker| must be initialized.
+  // |invalidation_state_tracker| must be initialized.
   NonBlockingInvalidationNotifier(
       const notifier::NotifierOptions& notifier_options,
       const InvalidationVersionMap& initial_max_invalidation_versions,
-      const browser_sync::WeakHandle<InvalidationVersionTracker>&
-          invalidation_version_tracker,
+      const browser_sync::WeakHandle<InvalidationStateTracker>&
+          invalidation_state_tracker,
       const std::string& client_info);
 
   virtual ~NonBlockingInvalidationNotifier();
 
   // SyncNotifier implementation.
   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(
@@ skipping 23 matching lines @@
   scoped_refptr<Core> core_;
   scoped_refptr<base::MessageLoopProxy> parent_message_loop_proxy_;
   scoped_refptr<base::MessageLoopProxy> io_message_loop_proxy_;
 
   DISALLOW_COPY_AND_ASSIGN(NonBlockingInvalidationNotifier);
 };
 
 }  // namespace sync_notifier
 
 #endif  // SYNC_NOTIFIER_NON_BLOCKING_INVALIDATION_NOTIFIER_H_