Refactoring to make adding ink drop animations easier

ui/views/controls/button/custom_button.cc

Index: ui/views/controls/button/custom_button.cc
diff --git a/ui/views/controls/button/custom_button.cc b/ui/views/controls/button/custom_button.cc
index 61b595bbfeb2f059327527ad3c1ef18e76afb270..feb5e2381133d093970e3c3bb5d2f4a3a4f325d0 100644
--- a/ui/views/controls/button/custom_button.cc
+++ b/ui/views/controls/button/custom_button.cc
@@ -246,8 +246,7 @@ void CustomButton::OnGestureEvent(ui::GestureEvent* event) {
              event->type() == ui::ET_GESTURE_END) {
     SetState(STATE_NORMAL);
   }
-  if (!event->handled())
-    Button::OnGestureEvent(event);
+  Button::OnGestureEvent(event);
 }
 
 bool CustomButton::AcceleratorPressed(const ui::Accelerator& accelerator) {
@@ -277,6 +276,7 @@ void CustomButton::OnDragDone() {
   // (since disabled buttons may still be able to be dragged).
   if (state_ != STATE_DISABLED)
     SetState(STATE_NORMAL);
+  Button::OnDragDone();
 }
 
 void CustomButton::GetAccessibleState(ui::AXViewState* state) {