Move RedirectChromeLogging to src/chromeos.

chrome/browser/chromeos/logging.h

+// Copyright 2017 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_BROWSER_CHROMEOS_LOGGING_H_
+#define CHROME_BROWSER_CHROMEOS_LOGGING_H_
+
+namespace base {
+class CommandLine;
+}
+
+namespace logging {
+
+// Redirects chrome logging to the appropriate session log dir.
+void RedirectChromeLogging(const base::CommandLine& command_line);
+
+}  // namespace logging
+
+#endif  // CHROME_BROWSER_CHROMEOS_LOGGING_H_