Original patch by rlarocque@chromium.org at http://codereview.chromium.org/7633077/

chrome/browser/sync/internal_api/read_transaction.cc

Index: chrome/browser/sync/internal_api/read_transaction.cc
diff --git a/chrome/browser/sync/internal_api/read_transaction.cc b/chrome/browser/sync/internal_api/read_transaction.cc
new file mode 100644
index 0000000000000000000000000000000000000000..40691dddad02610694ef9db3dace0a309283fee7
--- /dev/null
+++ b/chrome/browser/sync/internal_api/read_transaction.cc
@@ -0,0 +1,37 @@
+// Copyright (c) 2011 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.
+
+#include "chrome/browser/sync/internal_api/read_transaction.h"
+
+#include "chrome/browser/sync/syncable/syncable.h"
+
+namespace sync_api {
+
+//////////////////////////////////////////////////////////////////////////
+// ReadTransaction member definitions
+ReadTransaction::ReadTransaction(const tracked_objects::Location& from_here,
+                                 UserShare* share)
+    : BaseTransaction(share),
+      transaction_(NULL),
+      close_transaction_(true) {
+  transaction_ = new syncable::ReadTransaction(from_here, GetLookup());
+}
+
+ReadTransaction::ReadTransaction(UserShare* share,
+                                 syncable::BaseTransaction* trans)
+    : BaseTransaction(share),
+      transaction_(trans),
+      close_transaction_(false) {}
+
+ReadTransaction::~ReadTransaction() {
+  if (close_transaction_) {
+    delete transaction_;
+  }
+}
+
+syncable::BaseTransaction* ReadTransaction::GetWrappedTrans() const {
+  return transaction_;
+}
+
+} // namespace sync_api