Improve appearance of focus rings at fractional scales.

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 <algorithm>
 
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 180 matching lines @@
     return;
 
   // TODO(estade): make this a glow effect instead: crbug.com/658783
   gfx::Rect focus_bounds = GetLocalBounds();
   focus_bounds.Inset(gfx::Insets(1));
   canvas->DrawSolidFocusRect(
       gfx::RectF(focus_bounds),
       SkColorSetA(GetNativeTheme()->GetSystemColor(
                       ui::NativeTheme::kColorId_FocusedBorderColor),
                   0x99),
-      2.f);
+      2);
 }
 
 void Slider::OnSliderDragStarted() {
   SetHighlighted(true);
   if (listener_)
     listener_->SliderDragStarted(this);
 }
 
 void Slider::OnSliderDragEnded() {
   SetHighlighted(false);
@@ skipping 131 matching lines @@
       event->SetHandled();
       if (event->details().touch_points() <= 1)
         OnSliderDragEnded();
       break;
     default:
       break;
   }
 }
 
 }  // namespace views