Chromium roll (https://codereview.chromium.org/976353002)

base/prefs/base_prefs_switches.h

Index: base/prefs/base_prefs_switches.h
diff --git a/base/prefs/base_prefs_switches.h b/base/prefs/base_prefs_switches.h
new file mode 100644
index 0000000000000000000000000000000000000000..7a6b6651d219f0686ccf7f6ae058f5a074ef4386
--- /dev/null
+++ b/base/prefs/base_prefs_switches.h
@@ -0,0 +1,14 @@
+// Copyright 2015 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 BASE_PREFS_BASE_PREFS_SWITCHES_H_
+#define BASE_PREFS_BASE_PREFS_SWITCHES_H_
+
+namespace switches {
+
+extern const char kPrettyPrintPrefs[];
+
+}  // namespace switches
+
+#endif  // BASE_PREFS_BASE_PREFS_SWITCHES_H_