Last round of cleaning up MD layout constants.

chrome/browser/ui/views/location_bar/background_with_1_px_border.h

Index: chrome/browser/ui/views/location_bar/background_with_1_px_border.h
diff --git a/chrome/browser/ui/views/location_bar/background_with_1_px_border.h b/chrome/browser/ui/views/location_bar/background_with_1_px_border.h
index 69045793eca0a3d5c2102bea13fe1aa9371706c2..15125279974833cc0ffa9ec4e9b0b4105f70c042 100644
--- a/chrome/browser/ui/views/location_bar/background_with_1_px_border.h
+++ b/chrome/browser/ui/views/location_bar/background_with_1_px_border.h
@@ -25,6 +25,9 @@ class BackgroundWith1PxBorder : public views::Background {
   // Corner radius of the inside edge of the roundrect border stroke.
   static constexpr int kCornerRadius = 2;
 
+  // The thickness of the location bar's border in DIP.
+  static constexpr int kLocationBarBorderThicknessDip = 1;
+
   BackgroundWith1PxBorder(SkColor background, SkColor border);
 
   void Paint(gfx::Canvas* canvas, views::View* view) const override;