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

ash/common/system/tray/tray_constants.cc

Index: ash/common/system/tray/tray_constants.cc
diff --git a/ash/common/system/tray/tray_constants.cc b/ash/common/system/tray/tray_constants.cc
index 489ff1ca9a1415000a25b7bde6a2e27f8d15ed25..2cfd4cdb1d18728aa98f6c6d6c1ebca113dc40b0 100644
--- a/ash/common/system/tray/tray_constants.cc
+++ b/ash/common/system/tray/tray_constants.cc
@@ -92,6 +92,11 @@ const int kSeparatorWidth = 1;
 const SkColor kHorizontalSeparatorColor = SkColorSetA(SK_ColorBLACK, 0x1F);
 const int kHorizontalSeparatorHeight = 24;
 
+const SkColor kTrayPopupInkDropBaseColor = SK_ColorBLACK;
+const float kTrayPopupInkDropRippleOpacity = 0.06f;
+const float kTrayPopupInkDropHighlightOpacity = 0.08f;
+const int kTrayPopupInkDropInset = 4;
+
 int GetTrayConstant(TrayConstant constant) {
   const int kTrayItemHeightLegacy[] = {38, 38, kTrayItemSize};
   const int kTraySpacing[] = {4, 4, 0};