Logging API in chromedriver2.

chrome/test/chromedriver/logging.h

+// 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.
+
+#ifndef CHROME_TEST_CHROMEDRIVER_LOGGING_H_
+#define CHROME_TEST_CHROMEDRIVER_LOGGING_H_
+
+#include <string>
+#include <vector>
+
+#include "base/memory/scoped_vector.h"
+
+namespace base {
+class Value;
+}
+
+struct Capabilities;
+class DevToolsEventLogger;
+class Status;
+
+Status ParseLoggingPrefs(const base::Value& option, Capabilities* capabilities);
+
+Status CreateLoggers(const Capabilities& capabilities,
+                     ScopedVector<DevToolsEventLogger>* out_loggers);
+
+#endif  // CHROME_TEST_CHROMEDRIVER_LOGGING_H_