Makes windows scale slightly when dragging the caption. Also wired

ash/wm/toplevel_window_event_filter.h

Index: ash/wm/toplevel_window_event_filter.h
diff --git a/ash/wm/toplevel_window_event_filter.h b/ash/wm/toplevel_window_event_filter.h
index 01bced71d2d3a364a5557068c22dfbb868eaeb5c..a7fdaf674141676141e880ad145e1bdee755cb0b 100644
--- a/ash/wm/toplevel_window_event_filter.h
+++ b/ash/wm/toplevel_window_event_filter.h
@@ -61,8 +61,13 @@ class ASH_EXPORT ToplevelWindowEventFilter :
                                              int window_component);
 
  private:
-  // Invoked when the mouse is released to cleanup after a drag.
-  void CompleteDrag(aura::Window* window);
+  enum DragCompletionStatus {
+    DRAG_COMPLETE,
+    DRAG_REVERT
+  };
+
+  // Finishes the drag.
+  void CompleteDrag(DragCompletionStatus status);
 
   // Called during a drag to resize/position the window.
   // The return value is returned by OnMouseEvent() above.