[sync] Componentize sync: Part 2: Add SYNC_EXPORTs to files in src/sync/

sync/notifier/invalidator_factory.h

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// 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.
 
 #ifndef SYNC_NOTIFIER_INVALIDATOR_FACTORY_H_
 #define SYNC_NOTIFIER_INVALIDATOR_FACTORY_H_
 
 #include <string>
 
 #include "base/memory/weak_ptr.h"
 #include "jingle/notifier/base/notifier_options.h"
+#include "sync/base/sync_export.h"
 #include "sync/internal_api/public/util/weak_handle.h"
 #include "sync/notifier/invalidation_state_tracker.h"
 
 namespace syncer {
 
 class Invalidator;
 
 // Class to instantiate various implementations of the Invalidator
 // interface.
-class InvalidatorFactory {
+class SYNC_EXPORT InvalidatorFactory {
  public:
   // |client_info| is a string identifying the client, e.g. a user
   // agent string.  |invalidation_state_tracker| may be NULL (for
   // tests).
   InvalidatorFactory(
       const notifier::NotifierOptions& notifier_options,
       const std::string& client_info,
       const base::WeakPtr<InvalidationStateTracker>&
           invalidation_state_tracker);
   ~InvalidatorFactory();
 
   // Creates an invalidator. Caller takes ownership of the returned
   // object.  However, the returned object must not outlive the
   // factory from which it was created.  Can be called on any thread.
   Invalidator* CreateInvalidator();
 
  private:
   const notifier::NotifierOptions notifier_options_;
   const std::string client_info_;
   const InvalidationStateMap initial_invalidation_state_map_;
   const std::string invalidation_bootstrap_data_;
   const WeakHandle<InvalidationStateTracker>
       invalidation_state_tracker_;
 };
 
 }  // namespace syncer
 
 #endif  // SYNC_NOTIFIER_INVALIDATOR_FACTORY_H_