[chromedriver] Remove Logger and just use base LOG.

chrome/test/chromedriver/chrome/util.cc

Index: chrome/test/chromedriver/chrome/util.cc
diff --git a/chrome/test/chromedriver/chrome/util.cc b/chrome/test/chromedriver/chrome/util.cc
new file mode 100644
index 0000000000000000000000000000000000000000..b7f1a5cde097922b65eda5c1f3f4553adcbfb998
--- /dev/null
+++ b/chrome/test/chromedriver/chrome/util.cc
@@ -0,0 +1,14 @@
+// Copyright (c) 2013 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/test/chromedriver/chrome/util.h"
+
+#include "base/json/json_writer.h"
+#include "base/values.h"
+
+std::string SerializeValue(const base::Value* value) {
+  std::string json;
+  base::JSONWriter::Write(value, &json);
+  return json;
+}