Improve appearance of focus rings at fractional scales.

ui/views/painter.h

 // Copyright (c) 2012 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_PAINTER_H_
 #define UI_VIEWS_PAINTER_H_
 
 #include <stddef.h>
 
 #include <memory>
@@ skipping 69 matching lines @@
   static std::unique_ptr<Painter> CreateImageGridPainter(const int image_ids[]);
 
   // Factory methods for creating painters intended for rendering focus.
   static std::unique_ptr<Painter> CreateDashedFocusPainter();
   static std::unique_ptr<Painter> CreateDashedFocusPainterWithInsets(
       const gfx::Insets& insets);
   // Deprecated: used the InsetsF version below.
   static std::unique_ptr<Painter> CreateSolidFocusPainter(
       SkColor color,
       const gfx::Insets& insets);
+  // |thickness| is in dip.
   static std::unique_ptr<Painter> CreateSolidFocusPainter(
       SkColor color,
-      SkScalar thickness,
+      int thickness,
       const gfx::InsetsF& insets);
 
   // Returns the minimum size this painter can paint without obvious graphical
   // problems (e.g. overlapping images).
   virtual gfx::Size GetMinimumSize() const = 0;
 
   // Paints the painter in the specified region.
   virtual void Paint(gfx::Canvas* canvas, const gfx::Size& size) = 0;
 
  private:
@@ skipping 25 matching lines @@
 
   // NOTE: the images are owned by ResourceBundle. Don't free them.
   const gfx::ImageSkia* images_[3];
 
   DISALLOW_COPY_AND_ASSIGN(HorizontalPainter);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_PAINTER_H_