mash: Move ash/common/wm/shelf to ash/common/shelf

ash/wm/window_animations.cc

Index: ash/wm/window_animations.cc
diff --git a/ash/wm/window_animations.cc b/ash/wm/window_animations.cc
index e635553b753fd274335feb9fe56947642681cda0..9cfc41523b5c687bb82b15cec4aa5a4905df9ed7 100644
--- a/ash/wm/window_animations.cc
+++ b/ash/wm/window_animations.cc
@@ -470,9 +470,9 @@ gfx::Rect GetMinimizeAnimationTargetBoundsInScreen(aura::Window* window) {
   if (item_rect.width() != 0 || item_rect.height() != 0) {
     if (shelf->shelf_layout_manager()->visibility_state() == SHELF_AUTO_HIDE) {
       gfx::Rect shelf_bounds = shelf->shelf_widget()->GetWindowBoundsInScreen();
-      if (shelf->alignment() == wm::SHELF_ALIGNMENT_LEFT)
+      if (shelf->alignment() == SHELF_ALIGNMENT_LEFT)
         item_rect.set_x(shelf_bounds.right());
-      else if (shelf->alignment() == wm::SHELF_ALIGNMENT_RIGHT)
+      else if (shelf->alignment() == SHELF_ALIGNMENT_RIGHT)
         item_rect.set_x(shelf_bounds.x());
       else
         item_rect.set_y(shelf_bounds.y());