[ash-md] Added different highlighting modes to the InkDropImpl.

ui/views/controls/button/custom_button.h

Index: ui/views/controls/button/custom_button.h
diff --git a/ui/views/controls/button/custom_button.h b/ui/views/controls/button/custom_button.h
index 161824c9869e35bbcdfbbadd62dd258d932d7a0f..0f7271a4d511bf0c3cfc140ef32fd1e85f060e31 100644
--- a/ui/views/controls/button/custom_button.h
+++ b/ui/views/controls/button/custom_button.h
@@ -109,7 +109,6 @@ class VIEWS_EXPORT CustomButton : public Button, public gfx::AnimationDelegate {
   void OnDragDone() override;
   void GetAccessibleState(ui::AXViewState* state) override;
   void VisibilityChanged(View* starting_from, bool is_visible) override;
-  std::unique_ptr<InkDropHighlight> CreateInkDropHighlight() const override;
   SkColor GetInkDropBaseColor() const override;
 
   // Overridden from gfx::AnimationDelegate:
@@ -140,9 +139,6 @@ class VIEWS_EXPORT CustomButton : public Button, public gfx::AnimationDelegate {
   // we simply return IsTriggerableEvent(event).
   virtual bool ShouldEnterPushedState(const ui::Event& event);
 
-  // Returns true if highlight effect should be visible.
-  virtual bool ShouldShowInkDropHighlight() const;
-
   void set_has_ink_drop_action_on_click(bool has_ink_drop_action_on_click) {
     has_ink_drop_action_on_click_ = has_ink_drop_action_on_click;
   }