[ash-md] Remove the number of animators used for the Shelf animations.

ash/common/shelf/shelf_widget.h

Index: ash/common/shelf/shelf_widget.h
diff --git a/ash/common/shelf/shelf_widget.h b/ash/common/shelf/shelf_widget.h
index 995ef8ce17be269da93adfef3a72653eda4ec652..f58854d47d823fd9f89df85b2b89893eda504d02 100644
--- a/ash/common/shelf/shelf_widget.h
+++ b/ash/common/shelf/shelf_widget.h
@@ -46,7 +46,7 @@ class ASH_EXPORT ShelfWidget : public views::Widget,
 
   // Sets the shelf's background type.
   void SetPaintsBackground(ShelfBackgroundType background_type,
-                           BackgroundAnimatorChangeType change_type);
+                           gfx::AnimationChangeType change_type);

[James Cook, 2017/02/08 00:31:28]

#include for this?

or you could use enum class which would let you forward declare it

[bruthig, 2017/02/10 18:49:10]

Neat, I didn't know you could forward declare enum classes.

   ShelfBackgroundType GetBackgroundType() const;
 
   // Hide the shelf behind a black bar during e.g. a user transition when |hide|