Laser tool blocks events from propagating.

ash/laser/laser_pointer_view.h

 // Copyright 2016 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_COMMON_SYSTEM_CHROMEOS_PALETTE_TOOLS_LASER_POINTER_VIEW_H_
-#define ASH_COMMON_SYSTEM_CHROMEOS_PALETTE_TOOLS_LASER_POINTER_VIEW_H_
+#ifndef ASH_LASER_LASER_POINTER_VIEW_H_
+#define ASH_LASER_LASER_POINTER_VIEW_H_
 
 #include <memory>
 
-#include "ash/common/system/chromeos/palette/tools/laser_pointer_points.h"
+#include "ash/laser/laser_pointer_points.h"
 #include "base/macros.h"
 #include "ui/views/view.h"
 
+namespace aura {
+class Window;
+}
+
 namespace gfx {
 class Point;
 }
 
 namespace views {
 class Widget;
 }
 
 namespace ash {
 
 // LaserPointerView displays the palette tool laser pointer. It draws the laser,
 // which consists of a point where the mouse cursor should be, as well as a
 // trail of lines to help users track.
 class LaserPointerView : public views::View {
  public:
-  explicit LaserPointerView(base::TimeDelta life_duration);
+  explicit LaserPointerView(base::TimeDelta life_duration,
+                            aura::Window* root_window);
   ~LaserPointerView() override;
 
   void AddNewPoint(const gfx::Point& new_point);
   void Stop();
+  aura::Window* GetRootWindow();
 
  private:
-  friend class LaserPointerModeTestApi;
+  friend class LaserPointerControllerTestApi;
 
   // view::View:
   void OnPaint(gfx::Canvas* canvas) override;
 
   LaserPointerPoints laser_points_;
   std::unique_ptr<views::Widget> widget_;
 
   DISALLOW_COPY_AND_ASSIGN(LaserPointerView);
 };
-
 }  // namespace ash
 
-#endif  // ASH_COMMON_SYSTEM_CHROMEOS_PALETTE_TOOLS_LASER_POINTER_VIEW_H_
+#endif  // ASH_LASER_LASER_POINTER_VIEW_H_