MD - add ripples to DL shelf items

ui/views/animation/ink_drop_state.h

Index: ui/views/animation/ink_drop_state.h
diff --git a/ui/views/animation/ink_drop_state.h b/ui/views/animation/ink_drop_state.h
index 16f4fc2bee6f1aa584a29ed294b2605f5bfafba6..2456455c5da0b62d60e62bbd8f73d07b4b947d3a 100644
--- a/ui/views/animation/ink_drop_state.h
+++ b/ui/views/animation/ink_drop_state.h
@@ -16,21 +16,21 @@ enum class InkDropState {
   // The ink drop is not visible.
   HIDDEN,
   // The view is being interacted with but the action to be triggered has not
-  // yet been determined.
+  // yet been determined, e.g. a mouse button down.
   ACTION_PENDING,
-  // The quick action for the view has been triggered. e.g. a tap gesture to
-  // click a button.
-  QUICK_ACTION,
-  // A view is being interacted with and the pending action will be a 'slow'
-  // action. e.g. a long press that is still active before releasing.
-  SLOW_ACTION_PENDING,
-  // The slow action for the view has been triggered. e.g. a long press release
-  // to bring up a menu.
-  SLOW_ACTION,
+  // The quick action for the view has been triggered, e.g. a tap gesture or a
+  // mouse click on a button.
+  ACTION_TRIGGERED,
+  // A view is being interacted with and the pending action will be a secondary
+  // action, e.g. a long press.
+  ALTERNATE_ACTION_PENDING,
+  // The alternate action for the view has been triggered, e.g. a long press
+  // release to bring up a menu.
+  ALTERNATE_ACTION_TRIGGERED,
   // An active state for a view that is not currently being interacted with.
   // e.g. a pressed button that is showing a menu.
   ACTIVATED,
-  // A previously active state has been toggled to inactive. e.g. a drop down
+  // A previously active state has been toggled to inactive, e.g. a drop down
   // menu is closed.
   DEACTIVATED,
 };