Move bezel event routing for the shelf into ShelfLayoutManager

ash/shelf/shelf_layout_manager.h

Index: ash/shelf/shelf_layout_manager.h
diff --git a/ash/shelf/shelf_layout_manager.h b/ash/shelf/shelf_layout_manager.h
index e2018f8eaa181fd9f452a39f03aa242b07b1bb37..b68206c7ed894b0690587888301b0dcdfc1fb7a6 100644
--- a/ash/shelf/shelf_layout_manager.h
+++ b/ash/shelf/shelf_layout_manager.h
@@ -5,6 +5,8 @@
 #ifndef ASH_SHELF_SHELF_LAYOUT_MANAGER_H_
 #define ASH_SHELF_SHELF_LAYOUT_MANAGER_H_
 
+#include <vector>
+
 #include "ash/ash_export.h"
 #include "ash/launcher/launcher.h"
 #include "ash/shelf/background_animator.h"
@@ -38,6 +40,7 @@ class ShelfWidget;
 namespace internal {
 
 class PanelLayoutManagerTest;
+class ShelfBezelEventFilter;
 class ShelfLayoutManagerTest;
 class StatusAreaWidget;
 class WorkspaceController;
@@ -312,7 +315,10 @@ class ASH_EXPORT ShelfLayoutManager :
 
   // EventFilter used to detect when user moves the mouse over the launcher to
   // trigger showing the launcher.
-  scoped_ptr<AutoHideEventFilter> event_filter_;
+  scoped_ptr<AutoHideEventFilter> auto_hide_event_filter_;
+
+  // EventFilter used to detect when user issues a gesture on a bezel sensor.
+  scoped_ptr<ShelfBezelEventFilter> bezel_event_filter_;
 
   ObserverList<ShelfLayoutManagerObserver> observers_;