Implemented swipe to close in overview mode.

ash/wm/overview/scoped_overview_animation_settings.h

Index: ash/wm/overview/scoped_overview_animation_settings.h
diff --git a/ash/wm/overview/scoped_overview_animation_settings.h b/ash/wm/overview/scoped_overview_animation_settings.h
index 4ea09e53a480cc2e606a3708cfe3cfcce89017b4..a558c7ee6389a535e63b9cb45310a870788956a0 100644
--- a/ash/wm/overview/scoped_overview_animation_settings.h
+++ b/ash/wm/overview/scoped_overview_animation_settings.h
@@ -24,11 +24,6 @@ class ScopedOverviewAnimationSettings {
                                   aura::Window* window);
   virtual ~ScopedOverviewAnimationSettings();
 
-  // Convenvience method to fade in a Window with predefined animation settings.
-  // Note: The fade in animation will occur after a delay where the delay is how
-  // long the lay out animations take.
-  static void SetupFadeInAfterLayout(aura::Window* window);
-
  private:
   // The managed animation settings.
   ui::ScopedLayerAnimationSettings animation_settings_;