Refactor common invalidation framework types

sync/sessions/data_type_tracker.h

 // Copyright 2013 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.
 //
 // A class to track the per-type scheduling data.
 #ifndef SYNC_SESSIONS_DATA_TYPE_TRACKER_H_
 #define SYNC_SESSIONS_DATA_TYPE_TRACKER_H_
 
 #include <deque>
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/time/time.h"
 #include "sync/protocol/sync.pb.h"
 
 namespace syncer {
+
+class Invalidation;
+class SingleObjectInvalidationSet;
+
 namespace sessions {
 
 typedef std::deque<std::string> PayloadList;
 
 class DataTypeTracker {
  public:
   DataTypeTracker();
   ~DataTypeTracker();
 
   // For STL compatibility, we do not forbid the creation of a default copy
   // constructor and assignment operator.
 
   // Tracks that a local change has been made to this type.
   void RecordLocalChange();
 
   // Tracks that a local refresh request has been made for this type.
   void RecordLocalRefreshRequest();
 
-  // Tracks that we received an invalidation notification for this type.
-  void RecordRemoteInvalidation(const std::string& payload);
+  // Tracks that we received invalidation notifications for this type.
+  void RecordRemoteInvalidations(
+      const SingleObjectInvalidationSet& invalidations);
 
   // Records that a sync cycle has been performed successfully.
   // Generally, this means that all local changes have been committed and all
   // remote changes have been downloaded, so we can clear any flags related to
   // pending work.
   void RecordSuccessfulSyncCycle();
 
   // Updates the size of the invalidations payload buffer.
   void UpdatePayloadBufferSize(size_t new_size);
 
@@ skipping 65 matching lines @@
 
   // If !unthrottle_time_.is_null(), this type is throttled and may not download
   // or commit data until the specified time.
   base::TimeTicks unthrottle_time_;
 };
 
 }  // namespace syncer
 }  // namespace sessions
 
 #endif  // SYNC_SESSIONS_DATA_TYPE_TRACKER_H_