Move display preference code from ash/display/ to ui/display/manager/.

ui/display/manager/json_converter.h

+// Copyright 2016 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 UI_DISPLAY_MANAGER_JSON_CONVERTER_H_
+#define UI_DISPLAY_MANAGER_JSON_CONVERTER_H_
+
+#include "ui/display/manager/display_manager_export.h"
+
+namespace base {
+class Value;
+}
+
+namespace display {
+class DisplayLayout;
+
+DISPLAY_MANAGER_EXPORT bool JsonToDisplayLayout(const base::Value& value,
+                                                display::DisplayLayout* layout);

[kylechar, 2017/03/08 15:28:15]

You don't need the fully qualified display:: names now that this code is in
namespace display. Please remove all.

[thanhph, 2017/03/09 13:48:28]

Done.

+
+DISPLAY_MANAGER_EXPORT bool DisplayLayoutToJson(
+    const display::DisplayLayout& layout,
+    base::Value* value);
+
+}  // namespace display
+
+#endif  // UI_DISPLAY_MANAGER_JSON_CONVERTER_H_