Index: ui/views/view_properties.h |
diff --git a/ui/views/view_properties.h b/ui/views/view_properties.h |
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+++ b/ui/views/view_properties.h |
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+// 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_VIEWS_VIEW_PROPERTIES_H_ |
+#define UI_VIEWS_VIEW_PROPERTIES_H_ |
+ |
+#include "ui/base/class_property.h" |
+#include "ui/gfx/geometry/insets.h" |
+#include "ui/views/views_export.h" |
+ |
+namespace views { |
+ |
+// A property to store margins around the outer perimeter of the view. Margins |
+// are outside the bounds of the view. This is used by various layout managers |
+// to position views with the proper spacing between them. |
+VIEWS_EXPORT extern const ui::ClassProperty<gfx::Insets*>* const kMarginsKey; |
+ |
+} // namespace views |
+ |
+#endif // UI_VIEWS_VIEW_PROPERTIES_H_ |