Move wm/core to wm namespace.

ash/wm/resize_shadow.h

Index: ash/wm/resize_shadow.h
diff --git a/ash/wm/resize_shadow.h b/ash/wm/resize_shadow.h
index f61f393b572594893759bfb385a794f774f83ed8..8b05d92dbfd992de50e3a6e7d8a43e345bff3eb7 100644
--- a/ash/wm/resize_shadow.h
+++ b/ash/wm/resize_shadow.h
@@ -17,11 +17,9 @@ class Rect;
 namespace ui {
 class Layer;
 }
-namespace views {
-namespace corewm {
+namespace wm {
 class ImageGrid;
 }
-}
 
 namespace ash {
 namespace internal {
@@ -53,7 +51,7 @@ class ResizeShadow {
 
  private:
   // Images for the shadow effect.
-  scoped_ptr<views::corewm::ImageGrid> image_grid_;
+  scoped_ptr< ::wm::ImageGrid> image_grid_;
 
   // Hit test value from last call to ShowForHitTest().  Used to prevent
   // repeatedly triggering the same animations for the same hit.