Handle floating point coordinates from ozone to exosphere

ui/views/view.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 UI_VIEWS_VIEW_H_
 #define UI_VIEWS_VIEW_H_
 
 #include <stddef.h>
 
 #include <algorithm>
@@ skipping 457 matching lines @@
   // right-to-left UI layout.
 
   // Convert a point from the coordinate system of one View to another.
   //
   // |source| and |target| must be in the same widget, but doesn't need to be in
   // the same view hierarchy.
   // Neither |source| nor |target| can be NULL.
   static void ConvertPointToTarget(const View* source,
                                    const View* target,
                                    gfx::Point* point);
-
+  static void ConvertPointToTargetF(const View* source,
+                                    const View* target,
+                                    gfx::PointF* point);
   // Convert |rect| from the coordinate system of |source| to the coordinate
   // system of |target|.
   //
   // |source| and |target| must be in the same widget, but doesn't need to be in
   // the same view hierarchy.
   // Neither |source| nor |target| can be NULL.
   static void ConvertRectToTarget(const View* source,
                                   const View* target,
                                   gfx::RectF* rect);
 
@@ skipping 852 matching lines @@
   // or NULL, |transform| is set to convert from root view coordinates to this.
   bool GetTransformRelativeTo(const View* ancestor,
                               gfx::Transform* transform) const;
 
   // Coordinate conversion -----------------------------------------------------
 
   // Convert a point in the view's coordinate to an ancestor view's coordinate
   // system using necessary transformations. Returns whether the point was
   // successfully converted to the ancestor's coordinate system.
   bool ConvertPointForAncestor(const View* ancestor, gfx::Point* point) const;
+  bool ConvertPointForAncestorF(const View* ancestor, gfx::PointF* point) const;
 
   // Convert a point in the ancestor's coordinate system to the view's
   // coordinate system using necessary transformations. Returns whether the
   // point was successfully converted from the ancestor's coordinate system
   // to the view's coordinate system.
   bool ConvertPointFromAncestor(const View* ancestor, gfx::Point* point) const;
+  bool ConvertPointFromAncestorF(const View* ancestor,
+                                 gfx::PointF* point) const;
 
   // Convert a rect in the view's coordinate to an ancestor view's coordinate
   // system using necessary transformations. Returns whether the rect was
   // successfully converted to the ancestor's coordinate system.
   bool ConvertRectForAncestor(const View* ancestor, gfx::RectF* rect) const;
 
   // Convert a rect in the ancestor's coordinate system to the view's
   // coordinate system using necessary transformations. Returns whether the
   // rect was successfully converted from the ancestor's coordinate system
   // to the view's coordinate system.
@@ skipping 246 matching lines @@
   // Observers -------------------------------------------------------------
 
   base::ObserverList<ViewObserver> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(View);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_VIEW_H_