Move bezel event routing for the shelf into ShelfLayoutManager

ash/shelf/shelf_bezel_event_filter.h

Index: ash/shelf/shelf_bezel_event_filter.h
diff --git a/ash/shelf/shelf_bezel_event_filter.h b/ash/shelf/shelf_bezel_event_filter.h
new file mode 100644
index 0000000000000000000000000000000000000000..028e5b7bed4f8052eb29140e8df8330e77be01ee
--- /dev/null
+++ b/ash/shelf/shelf_bezel_event_filter.h
@@ -0,0 +1,39 @@
+// Copyright (c) 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef ASH_SHELF_SHELF_BEZEL_EVENT_FILTER_H_
+#define ASH_SHELF_SHELF_BEZEL_EVENT_FILTER_H_
+
+#include "ash/wm/gestures/shelf_gesture_handler.h"
+#include "ui/base/events/event_handler.h"
+#include "ui/gfx/rect.h"
+
+namespace ash {
+namespace internal {
+class ShelfLayoutManager;
+
+// Detects and forwards touch gestures that occur on a bezel sensor to the
+// shelf.
+class ShelfBezelEventFilter : public ui::EventHandler {
+ public:
+  explicit ShelfBezelEventFilter(ShelfLayoutManager* shelf);
+  virtual ~ShelfBezelEventFilter();
+
+  // Overridden from ui::EventHandler:
+  virtual void OnGestureEvent(ui::GestureEvent* event) OVERRIDE;
+
+ private:
+  bool IsShelfOnBezel(const gfx::Rect& screen,
+                      const gfx::Point& point) const;
+
+  ShelfLayoutManager* shelf_;  // non-owned
+  bool in_touch_drag_;
+  ShelfGestureHandler gesture_handler_;
+  DISALLOW_COPY_AND_ASSIGN(ShelfBezelEventFilter);
+};
+
+}  // namespace internal
+}  // namespace ash
+
+#endif  // ASH_SHELF_SHELF_BEZEL_EVENT_FILTER_H_