[sync] Componentize sync: Part 5: Eliminate filename collisions in sync.gyp

sync/syncable/read_transaction.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 SYNC_SYNCABLE_READ_TRANSACTION_H_
-#define SYNC_SYNCABLE_READ_TRANSACTION_H_
-
-#include "sync/syncable/base_transaction.h"
-
-namespace syncer {
-class ReadTransaction;
-namespace syncable {
-
-// Locks db in constructor, unlocks in destructor.
-class ReadTransaction : public BaseTransaction {
- public:
-  ReadTransaction(const tracked_objects::Location& from_here,
-                  Directory* directory);
-
-  virtual ~ReadTransaction();
-
- protected:  // Don't allow creation on heap, except by sync API wrapper.
-  friend class syncer::ReadTransaction;
-  void* operator new(size_t size) { return (::operator new)(size); }
-
-  DISALLOW_COPY_AND_ASSIGN(ReadTransaction);
-};
-
-}  // namespace syncable
-}  // namespace syncer
-
-#endif  // SYNC_SYNCABLE_READ_TRANSACTION_H_