Handle floating point coordinates from ozone to exosphere

components/exo/touch_delegate.h

 // Copyright 2015 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 COMPONENTS_EXO_TOUCH_DELEGATE_H_
 #define COMPONENTS_EXO_TOUCH_DELEGATE_H_
 
 #include "base/time/time.h"
 
 namespace gfx {
-class Point;
+class PointF;
 }
 
 namespace exo {
 class Surface;
 class Touch;
 
 // Handles events on touch devices in context-specific ways.
 class TouchDelegate {
  public:
   // Called at the top of the touch device's destructor, to give observers a
   // chance to remove themselves.
   virtual void OnTouchDestroying(Touch* touch) = 0;
 
   // This should return true if |surface| is a valid target for this touch
   // device. E.g. the surface is owned by the same client as the touch device.
   virtual bool CanAcceptTouchEventsForSurface(Surface* surface) const = 0;
 
   // Called when a new touch point has appeared on the surface. This touch
   // point is assigned a unique ID. Future events from this touch point
   // reference this ID. |location| is the initial location of touch point
   // relative to the origin of the surface.
   virtual void OnTouchDown(Surface* surface,
                            base::TimeTicks time_stamp,
                            int id,
-                           const gfx::Point& location) = 0;
+                           const gfx::PointF& location) = 0;
 
   // Called when a touch point has disappeared. No further events will be sent
   // for this touch point.
   virtual void OnTouchUp(base::TimeTicks time_stamp, int id) = 0;
 
   // Called when a touch point has changed coordinates.
   virtual void OnTouchMotion(base::TimeTicks time_stamp,
                              int id,
-                             const gfx::Point& location) = 0;
+                             const gfx::PointF& location) = 0;
 
   // Called when a touch point has changed its shape.
   virtual void OnTouchShape(int id, float major, float minor) = 0;
 
   // Called when the client should apply all updated touches.
   virtual void OnTouchFrame() = 0;
 
   // Called when the touch session has been canceled. Touch cancellation
   // applies to all touch points currently active.
   virtual void OnTouchCancel() = 0;
 
  protected:
   virtual ~TouchDelegate() {}
 };
 
 }  // namespace exo
 
 #endif  // COMPONENTS_EXO_TOUCH_DELEGATE_H_