Make the focus, caret, and cursor highlights fade out.

chrome/browser/chromeos/ui/focus_ring_layer.h

 // Copyright 2013 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 CHROME_BROWSER_CHROMEOS_UI_FOCUS_RING_LAYER_H_
 #define CHROME_BROWSER_CHROMEOS_UI_FOCUS_RING_LAYER_H_
 
 #include <memory>
 
 #include "base/macros.h"
@@ skipping 31 matching lines @@
   ~FocusRingLayer() override;
 
   // Move the focus ring layer to the given bounds in the coordinates of
   // the given root window.
   void Set(aura::Window* root_window, const gfx::Rect& bounds);
 
   // Returns true if this layer is in a composited window with an
   // animation observer.
   bool CanAnimate() const;
 
+  // Set the layer's opacity.
+  void SetOpacity(float opacity);
+
   ui::Layer* layer() { return layer_.get(); }
   aura::Window* root_window() { return root_window_; }
 
  protected:
   // Updates |root_window_| and creates |layer_| if it doesn't exist,
   // or if the root window has changed. Moves the layer to the top if
   // it wasn't there already.
   void CreateOrUpdateLayer(aura::Window* root_window,
                            const char* layer_name,
                            const gfx::Rect& bounds);
@@ skipping 24 matching lines @@
 
   // The compositor associated with this layer.
   ui::Compositor* compositor_;
 
   DISALLOW_COPY_AND_ASSIGN(FocusRingLayer);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_UI_FOCUS_RING_LAYER_H_