Chrome OS: adjust wifi icons.

ash/system/tray/tray_popup_item_style.h

 // Copyright 2016 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 ASH_SYSTEM_TRAY_TRAY_POPUP_ITEM_STYLE_H_
 #define ASH_SYSTEM_TRAY_TRAY_POPUP_ITEM_STYLE_H_
 
 #include "base/macros.h"
 #include "third_party/skia/include/core/SkColor.h"
 
@@ skipping 32 matching lines @@
     DETAILED_VIEW_LABEL,
     // System information text (e.g. date/time, battery status, etc).
     SYSTEM_INFO,
     // Child buttons within rows that have a visible border (e.g. Cast's
     // "Stop", etc).
     BUTTON,
     // Sub text within a row (e.g. user name in user row).
     CAPTION,
   };
 
+  static constexpr double kInactiveIconAlpha = 0.54;
+
   static SkColor GetIconColor(ColorStyle color_style);
 
   explicit TrayPopupItemStyle(FontStyle font_style);
   ~TrayPopupItemStyle();
 
   ColorStyle color_style() const { return color_style_; }
 
   void set_color_style(ColorStyle color_style) { color_style_ = color_style; }
 
   FontStyle font_style() const { return font_style_; }
@@ skipping 11 matching lines @@
   FontStyle font_style_;
 
   ColorStyle color_style_;
 
   DISALLOW_COPY_AND_ASSIGN(TrayPopupItemStyle);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_TRAY_TRAY_POPUP_ITEM_STYLE_H_