[ash-md] Changed the style of ink drop applied to system menu icon buttons.

ui/views/animation/ink_drop_highlight.h

 // Copyright 2015 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_ANIMATION_INK_DROP_HIGHLIGHT_H_
 #define UI_VIEWS_ANIMATION_INK_DROP_HIGHLIGHT_H_
 
 #include <iosfwd>
 #include <memory>
 
@@ skipping 41 matching lines @@
                    const gfx::PointF& center_point,
                    SkColor color);
   virtual ~InkDropHighlight();
 
   void set_observer(InkDropHighlightObserver* observer) {
     observer_ = observer;
   }
 
   void set_explode_size(const gfx::Size& size) { explode_size_ = size; }
 
+  void set_visible_opacity(float visible_opacity) {
+    visible_opacity_ = visible_opacity;
+  }
+
   // Returns true if the highlight animation is either in the process of fading
   // in or is fully visible.
   bool IsFadingInOrVisible() const;
 
   // Fades in the highlight visual over the given |duration|.
   void FadeIn(const base::TimeDelta& duration);
 
   // Fades out the highlight visual over the given |duration|. If |explode| is
   // true then the highlight will animate a size increase in addition to the
   // fade out.
@@ skipping 66 matching lines @@
 
 // This is declared here for use in gtest-based unit tests but is defined in
 // the views_test_support target. Depend on that to use this in your unit test.
 // This should not be used in production code - call ToString() instead.
 void PrintTo(InkDropHighlight::AnimationType animation_type,
              ::std::ostream* os);
 
 }  // namespace views
 
 #endif  // UI_VIEWS_ANIMATION_INK_DROP_HIGHLIGHT_H_