views: Move standard_layout.h into the layout directory.

views/layout/layout_constants.h

Index: views/layout/layout_constants.h
diff --git a/views/standard_layout.h b/views/layout/layout_constants.h
similarity index 94%
rename from views/standard_layout.h
rename to views/layout/layout_constants.h
index 96d36fe3895b91ecec40733902268b493ce78294..31570b060094bfae1ea27445ed04e8c426741295 100644
--- a/views/standard_layout.h
+++ b/views/layout/layout_constants.h
@@ -2,13 +2,10 @@
 // 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
@@ -67,4 +64,4 @@ 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_