[Sync] Convert sync to a static library.

components/sync/syncable/scoped_parent_child_index_updater.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.
 
 #ifndef COMPONENTS_SYNC_SYNCABLE_SCOPED_PARENT_CHILD_INDEX_UPDATER_H_
 #define COMPONENTS_SYNC_SYNCABLE_SCOPED_PARENT_CHILD_INDEX_UPDATER_H_
 
 #include "base/macros.h"
-#include "components/sync/base/sync_export.h"
 
 namespace syncer {
 namespace syncable {
 
 class ParentChildIndex;
 class ScopedKernelLock;
 struct EntryKernel;
 
 // Temporarily removes an item from the ParentChildIndex and re-adds it this
 // object goes out of scope.
 class ScopedParentChildIndexUpdater {
  public:
   ScopedParentChildIndexUpdater(const ScopedKernelLock& proof_of_lock,
                                 EntryKernel* entry,
                                 ParentChildIndex* index);
   ~ScopedParentChildIndexUpdater();
 
  private:
   EntryKernel* entry_;
   ParentChildIndex* index_;
 
   DISALLOW_COPY_AND_ASSIGN(ScopedParentChildIndexUpdater);
 };
 
 }  // namespace syncable
 }  // namespace syncer
 
 #endif  // COMPONENTS_SYNC_SYNCABLE_SCOPED_PARENT_CHILD_INDEX_UPDATER_H_