ash: Cleanup - remove unused private fields.

ash/wm/panels/panel_window_resizer_unittest.cc

Index: ash/wm/panels/panel_window_resizer_unittest.cc
diff --git a/ash/wm/panels/panel_window_resizer_unittest.cc b/ash/wm/panels/panel_window_resizer_unittest.cc
index 73500b394be3ff8b9ff3f4a276550c54361b6aee..1e39c7093fd5159305831eb87cb1285a322d64c0 100644
--- a/ash/wm/panels/panel_window_resizer_unittest.cc
+++ b/ash/wm/panels/panel_window_resizer_unittest.cc
@@ -18,7 +18,6 @@
 #include "ash/test/shell_test_api.h"
 #include "ash/test/test_shelf_delegate.h"
 #include "ash/wm/drag_window_resizer.h"
-#include "ash/wm/panels/panel_layout_manager.h"
 #include "ash/wm/window_state.h"
 #include "ash/wm/wm_event.h"
 #include "base/win/windows_version.h"
@@ -175,7 +174,6 @@ class PanelWindowResizerTest : public test::AshTestBase {
 
  private:
   scoped_ptr<WindowResizer> resizer_;
-  PanelLayoutManager* panel_layout_manager_;
   ShelfModel* model_;
   test::TestShelfDelegate* shelf_delegate_;