[ash-md] Changed opaque shelf color darkening from 90% to 70%.

ash/common/shelf/shelf_constants.cc

 // 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.
 
 #include "ash/common/shelf/shelf_constants.h"
 
 #include "base/logging.h"
 #include "third_party/skia/include/core/SkColor.h"
 
 namespace ash {
 
 const int kTimeToSwitchBackgroundMs = 1000;
 const int kWorkspaceAreaVisibleInset = 2;
 const int kWorkspaceAreaAutoHideInset = 5;
 const int kShelfAutoHideSize = 3;
 const SkColor kShelfDefaultBaseColor = SK_ColorBLACK;
 const int kShelfButtonSize = 48;
 const int kShelfButtonSpacing = 16;
 const SkColor kShelfButtonActivatedHighlightColor =
     SkColorSetA(SK_ColorWHITE, 100);
 const SkColor kShelfInkDropBaseColor = SK_ColorWHITE;
 const float kShelfInkDropVisibleOpacity = 0.2f;
 const SkColor kShelfIconColor = SK_ColorWHITE;
 const int kShelfTranslucentAlpha = 153;
 const int kShelfTranslucentColorDarkenAlpha = 102;
-const int kShelfOpaqueColorDarkenAlpha = 230;
+const int kShelfOpaqueColorDarkenAlpha = 178;
 const int kOverflowButtonSize = 32;
 const int kOverflowButtonCornerRadius = 2;
 const int kAppListButtonRadius = kOverflowButtonSize / 2;
 
 int GetShelfConstant(ShelfConstant shelf_constant) {
   const int kShelfSize[] = {47, 48, 48};
   const int kShelfInsetsForAutoHide[] = {3, 0, 0};
 
   // TODO(estade): clean this up --- remove unneeded constants and reduce
   // remaining arrays to a single constant.
   const int mode = 1;
   switch (shelf_constant) {
     case SHELF_SIZE:
       return kShelfSize[mode];
     case SHELF_INSETS_FOR_AUTO_HIDE:
       return kShelfInsetsForAutoHide[mode];
   }
   NOTREACHED();
   return 0;
 }
 
 }  // namespace ash