[sync] Componentize sync: Part 6: Add more SYNC_EXPORTs to files in src/sync/

sync/notifier/invalidation_state_tracker.h

 // Copyright 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 InvalidationStateTracker is an interface that handles persisting state
 // needed for invalidations. Currently, it is responsible for managing the
 // following information:
 // - Max version seen from the invalidation server to help dedupe invalidations.
 // - Bootstrap data for the invalidation client.
 // - Payloads and locally generated ack handles, to support local acking.
@@ skipping 22 matching lines @@
   InvalidationState();
   ~InvalidationState();
 
   int64 version;
   std::string payload;
   AckHandle expected;
   AckHandle current;
 };
 
 // TODO(dcheng): Remove this in favor of adding an Equals() method.
-bool operator==(const InvalidationState& lhs, const InvalidationState& rhs);
+SYNC_EXPORT_PRIVATE bool operator==(const InvalidationState& lhs,
+                                    const InvalidationState& rhs);
 
 typedef std::map<invalidation::ObjectId, InvalidationState, ObjectIdLessThan>
     InvalidationStateMap;
 typedef std::map<invalidation::ObjectId, AckHandle, ObjectIdLessThan>
     AckHandleMap;
 
 class InvalidationStateTracker {
  public:
   InvalidationStateTracker() {}
 
@@ skipping 29 matching lines @@
   virtual void Acknowledge(const invalidation::ObjectId& id,
                            const AckHandle& ack_handle) = 0;
 
  protected:
   virtual ~InvalidationStateTracker() {}
 };
 
 }  // namespace syncer
 
 #endif  // SYNC_NOTIFIER_INVALIDATION_STATE_TRACKER_H_