Fixing focus highlight on high DPI devices for accessibility

ui/views/controls/slider.cc

 // 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.
 
 #include "ui/views/controls/slider.h"
 
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 302 matching lines @@
   state->role = ui::AccessibilityTypes::ROLE_SLIDER;
   state->name = accessible_name_;
   state->value = UTF8ToUTF16(
       base::StringPrintf("%d%%", (int)(value_ * 100 + 0.5)));
 }
 
 void Slider::OnPaintFocusBorder(gfx::Canvas* canvas) {
   if (!focus_border_color_) {
     View::OnPaintFocusBorder(canvas);
   } else if (HasFocus()) {
-    canvas->DrawRect(gfx::Rect(1, 1, width() - 3, height() - 3),
-                     focus_border_color_);
+    canvas->DrawSolidFocusRect(
+        gfx::Rect(1, 1, width() - 3, height() - 3),
+        focus_border_color_);
   }
 }
 
 }  // namespace views