Update LocationBarView Background

chrome/browser/ui/views/layout_constants.h

 // Copyright 2015 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 CHROME_BROWSER_UI_VIEWS_LAYOUT_CONSTANTS_H_
 #define CHROME_BROWSER_UI_VIEWS_LAYOUT_CONSTANTS_H_
 
 #include "ui/gfx/geometry/insets.h"
 
 enum LayoutConstant {
   // Vertical offset from top of content to the top of find bar.
   FIND_BAR_TOOLBAR_OVERLAP,
 
   // Horizontal padding applied between items of icon-label views.
   ICON_LABEL_VIEW_INTERNAL_PADDING,
 
   // Additional horizontal padding applied on the trailing edge of icon-label
   // views.
   ICON_LABEL_VIEW_TRAILING_PADDING,
 
   // The horizontal space between the edge and a bubble.
   LOCATION_BAR_BUBBLE_HORIZONTAL_PADDING,
 
   // The additional vertical padding of a bubble.
   LOCATION_BAR_BUBBLE_VERTICAL_PADDING,
 
+  // The thickness of the location bar's border.
+  LOCATION_BAR_EDGE_THICKNESS,

[Peter Kasting, 2015/10/30 21:07:14]

Nit: Use BORDER rather than EDGE since semantically, the "edge" is one side or
the other of the border.

[jonross, 2015/11/02 16:36:22]

Done.

+
   // The height to be occupied by the LocationBar. For
   // MaterialDesignController::NON_MATERIAL the height is determined from image
   // assets.
   LOCATION_BAR_HEIGHT,
 
   // Space between items in the location bar, as well as between items and the
   // edges.
   LOCATION_BAR_HORIZONTAL_PADDING,
 
   // The vertical padding of items in the location bar.
@@ skipping 73 matching lines @@
   TOOLBAR,
 
   // The spacing between a ToolbarButton's image and its border.
   TOOLBAR_BUTTON,
 };
 
 int GetLayoutConstant(LayoutConstant constant);
 gfx::Insets GetLayoutInsets(LayoutInset inset);
 
 #endif  // CHROME_BROWSER_UI_VIEWS_LAYOUT_CONSTANTS_H_