Add MD ink drop ripple to shelf app items

ash/shelf/overflow_button.h

Index: ash/shelf/overflow_button.h
diff --git a/ash/shelf/overflow_button.h b/ash/shelf/overflow_button.h
index 9fe15199fe0445960409d5d9326d48cdf3fdc6bd..3243c0daca4792d9a53b3d96f3589ec1046f0c18 100644
--- a/ash/shelf/overflow_button.h
+++ b/ash/shelf/overflow_button.h
@@ -13,12 +13,12 @@
 
 namespace ash {
 
-class Shelf;
+class ShelfView;
 
 // Shelf overflow chevron button.
 class OverflowButton : public views::CustomButton {
  public:
-  OverflowButton(views::ButtonListener* listener, Shelf* shelf);
+  OverflowButton(ShelfView* shelf_view);

[bruthig, 2016/06/09 03:25:59]

explicit

[mohsen, 2016/06/09 21:24:50]

Thanks for catching this. Done.

   ~OverflowButton() override;
 
   void OnShelfAlignmentChanged();
@@ -29,13 +29,16 @@ class OverflowButton : public views::CustomButton {
   // views::View overrides:
   void OnPaint(gfx::Canvas* canvas) override;
 
+  // views::CustomButton:
+  void NotifyClick(const ui::Event& event) override;
+
   // Left and right images are rotations of bottom_image and are
   // owned by the overflow button.
   gfx::ImageSkia left_image_;
   gfx::ImageSkia right_image_;
   // Bottom image is owned by the resource bundle.
   const gfx::ImageSkia* bottom_image_;
-  Shelf* shelf_;
+  ShelfView* shelf_view_;
 
   DISALLOW_COPY_AND_ASSIGN(OverflowButton);
 };