Fixing focus highlight on high DPI devices for accessibility

ui/gfx/canvas.h

Index: ui/gfx/canvas.h
diff --git a/ui/gfx/canvas.h b/ui/gfx/canvas.h
index eb86e69871605b4ecfa956cd420c5687adfaa6a1..f8193f1134cbd610d79319d9f388115a8cd94976 100644
--- a/ui/gfx/canvas.h
+++ b/ui/gfx/canvas.h
@@ -409,6 +409,10 @@ class GFX_EXPORT Canvas {
   // Draws a dotted gray rectangle used for focus purposes.
   void DrawFocusRect(const Rect& rect);
 
+  // Draws a |rect| in the specified region with the specified |color| with a
+  // with of one logical pixel which might be more device pixels.
+  void DrawSolidFocusRect(const Rect& rect, SkColor color);
+
   // Tiles the image in the specified region.
   // Parameters are specified relative to current canvas scale not in pixels.
   // Thus, |x| is 2 pixels if canvas scale = 2 & |x| = 1.