Handle floating point coordinates from ozone to exosphere

ash/display/screen_position_controller.h

 // Copyright (c) 2012 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_DISPLAY_SCREEN_POSITION_CONTROLLER_H_
 #define ASH_DISPLAY_SCREEN_POSITION_CONTROLLER_H_
 
 #include <vector>
 
 #include "ash/ash_export.h"
@@ skipping 16 matching lines @@
       const std::vector<aura::Window*>& root_windows,
       gfx::Point* point_in_host,
       aura::Window** target_window);
 
   ScreenPositionController() {}
   ~ScreenPositionController() override {}
 
   // aura::client::ScreenPositionClient overrides:
   void ConvertPointToScreen(const aura::Window* window,
                             gfx::Point* point) override;
+  void ConvertPointToScreenF(const aura::Window* window,
+                             gfx::PointF* point) override;
   void ConvertPointFromScreen(const aura::Window* window,
                               gfx::Point* point) override;
+  void ConvertPointFromScreenF(const aura::Window* window,
+                               gfx::PointF* point) override;
   void ConvertHostPointToScreen(aura::Window* window,
                                 gfx::Point* point) override;
   void SetBounds(aura::Window* window,
                  const gfx::Rect& bounds,
                  const display::Display& display) override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ScreenPositionController);
 };
 
 }  // namespace ash
 
 #endif  // ASH_DISPLAY_SCREEN_POSITION_CONTROLLER_H_