Removed the "Swipe to close in overview" feature.

ash/wm/overview/window_selector_controller.h

Index: ash/wm/overview/window_selector_controller.h
diff --git a/ash/wm/overview/window_selector_controller.h b/ash/wm/overview/window_selector_controller.h
index 518d05deaba124350ac052bc532e5928fa9da11a..8d4a625e13e72ec9aab2c160e03e59900d2648f6 100644
--- a/ash/wm/overview/window_selector_controller.h
+++ b/ash/wm/overview/window_selector_controller.h
@@ -48,8 +48,6 @@ class ASH_EXPORT WindowSelectorController
   // are visible during overview mode.
   bool IsRestoringMinimizedWindows() const;
 
-  bool swipe_to_close_enabled() const { return swipe_to_close_enabled_; }
-
   // WindowSelectorDelegate:
   void OnSelectionEnded() override;
 
@@ -62,9 +60,6 @@ class ASH_EXPORT WindowSelectorController
   scoped_ptr<WindowSelector> window_selector_;
   base::Time last_selection_time_;
 
-  // Tracks whether the "Swipe-to-close" feature is enabled.
-  bool swipe_to_close_enabled_;
-
   DISALLOW_COPY_AND_ASSIGN(WindowSelectorController);
 };