Add MD ink drop ripple to app list button

ash/shelf/shelf_button.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/shelf/shelf_button.h"
 
 #include <algorithm>
 
 #include "ash/ash_switches.h"
 #include "ash/common/ash_constants.h"
@@ skipping 36 matching lines @@
 const SkColor kIndicatorColor = SK_ColorWHITE;
 
 // Canvas scale to ensure that the activity indicator is not pixelated even at
 // the highest possible device scale factors.
 const int kIndicatorCanvasScale = 5;
 
 // Shelf item ripple constants.
 const int kInkDropSmallSize = 48;
 const int kInkDropLargeSize = 60;
 const int kInkDropLargeCornerRadius = 4;
-const SkColor kInkDropBaseColor = SK_ColorWHITE;
 
 // Paints an activity indicator on |canvas| whose |size| is specified in DIP.
 void PaintIndicatorOnCanvas(gfx::Canvas* canvas, const gfx::Size& size) {
   SkPaint paint;
   paint.setColor(kIndicatorColor);
   paint.setFlags(SkPaint::kAntiAlias_Flag);
   canvas->DrawCircle(
       gfx::Point(size.width() / 2,
                  size.height() - kIndicatorOffsetFromBottom - kIndicatorRadius),
       kIndicatorRadius, paint);
@@ skipping 186 matching lines @@
     : CustomButton(nullptr),
       listener_(listener),
       shelf_view_(shelf_view),
       icon_view_(new views::ImageView()),
       bar_(new BarView(shelf_view->shelf())),
       state_(STATE_NORMAL),
       destroyed_flag_(nullptr) {
   SetFocusBehavior(FocusBehavior::ACCESSIBLE_ONLY);
   if (ash::MaterialDesignController::IsShelfMaterial()) {
     SetHasInkDrop(true);
-    set_ink_drop_base_color(kInkDropBaseColor);
+    set_ink_drop_base_color(kShelfInkDropBaseColor);
   }
 
   const gfx::ShadowValue kShadows[] = {
       gfx::ShadowValue(gfx::Vector2d(0, 2), 0, SkColorSetARGB(0x1A, 0, 0, 0)),
       gfx::ShadowValue(gfx::Vector2d(0, 3), 1, SkColorSetARGB(0x1A, 0, 0, 0)),
       gfx::ShadowValue(gfx::Vector2d(0, 0), 1, SkColorSetARGB(0x54, 0, 0, 0)),
   };
   icon_shadows_.assign(kShadows, kShadows + arraysize(kShadows));
 
   // TODO: refactor the layers so each button doesn't require 2.
@@ skipping 297 matching lines @@
         views::ImageView::TRAILING));
     bar_->SetVerticalAlignment(shelf->SelectValueForShelfAlignment(
         views::ImageView::TRAILING, views::ImageView::CENTER,
         views::ImageView::CENTER));
     bar_->SchedulePaint();
   }
   bar_->SetVisible(bar_id != 0 && state_ != STATE_NORMAL);
 }
 
 }  // namespace ash