views: Move standard_layout.h into the layout directory.

views/layout/layout_constants.h

 // Copyright (c) 2011 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 VIEWS_STANDARD_LAYOUT_H_
-#define VIEWS_STANDARD_LAYOUT_H_
+#ifndef VIEWS_LAYOUT_LAYOUT_CONSTANTS_H_
+#define VIEWS_LAYOUT_LAYOUT_CONSTANTS_H_
 #pragma once
 
-#include "views/grid_layout.h"
-
-//
 // This file contains some constants we use to implement our standard panel
 // layout.
 // see: spec 21/4
 
 // Left or right margin.
 const int kPanelHorizMargin = 13;
 
 // Top or bottom margin.
 const int kPanelVertMargin = 13;
 
@@ skipping 38 matching lines @@
 // top or bottom of a button.
 const int kButtonVEdgeMargin = 6;
 
 // Vertical spacing between the edge of the window and the
 // left or right of a button.
 const int kButtonHEdgeMargin = 7;
 
 // Horizontal spacing between buttons that are logically related.
 const int kRelatedButtonHSpacing = 6;
 
-#endif  // VIEWS_STANDARD_LAYOUT_H_
+#endif  // VIEWS_LAYOUT_LAYOUT_CONSTANTS_H_