mash: Convert AshPopupAlignmentDelegate to wm common types

ash/common/shelf/wm_shelf.h

Index: ash/common/shelf/wm_shelf.h
diff --git a/ash/common/shelf/wm_shelf.h b/ash/common/shelf/wm_shelf.h
index 6c78efcc1efb3f804184e074b27756640fc40fba..834b494811eee46d5c5757084eb0ff12068a3c97 100644
--- a/ash/common/shelf/wm_shelf.h
+++ b/ash/common/shelf/wm_shelf.h
@@ -29,12 +29,16 @@ class ASH_EXPORT WmShelf {
   virtual ShelfAutoHideBehavior GetAutoHideBehavior() const = 0;
   virtual void SetAutoHideBehavior(ShelfAutoHideBehavior behavior) = 0;
 
+  virtual ShelfAutoHideState GetAutoHideState() const = 0;
+
   virtual ShelfBackgroundType GetBackgroundType() const = 0;
 
   virtual void UpdateVisibilityState() = 0;
 
   virtual ShelfVisibilityState GetVisibilityState() const = 0;
 
+  virtual gfx::Rect GetUserWorkAreaBounds() const = 0;
+
   virtual void UpdateIconPositionForWindow(WmWindow* window) = 0;
 
   // Returns the screen bounds of the item for the specified window. If there is