Add display::GetDisplayNearestView

ui/gfx/view_util.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 UI_GFX_VIEW_UTIL_H_

[tapted, 2017/02/15 00:36:10]

view_util isn't a good name -- neither for the component or the header (e.g.
sounds like it should be related to ui/views, but it's not at all. also
"foo_util.h" has a risk of becoming a grab-bag of unrelated things -- it's too
generic).

I think this is most related to ui/gfx/native_widget_types.h

so I suggest calling this header
 - ui/gfx/native_widget/native_widget_properties.h or
 - ui/native_widget/native_widget_properties.h or
 - ui/display/native_widget_properties.h

oshima@ may have an opinion here (I don't have OWNERS powers around here :)

[Jinsuk Kim, 2017/02/16 10:11:25]

Point taken. Tentatively chose the first one. Will wait for oshima@'s input too.

+#define UI_GFX_VIEW_UTIL_H_
+
+#include "ui/gfx/gfx_export.h"
+#include "ui/gfx/native_widget_types.h"
+
+namespace gfx {
+
+// Get the top level window for the native view. This can return NULL.
+GFX_EXPORT gfx::NativeWindow GetTopLevel(gfx::NativeView view);

[tapted, 2017/02/15 00:36:10]

gfx:: prefixes are not needed -- more elsewhere

[Jinsuk Kim, 2017/02/16 10:11:25]

Done.

+
+}  // namespace gfx
+
+#endif  // UI_GFX_VIEW_UTIL_H_