Handle floating point coordinates from ozone to exosphere

ui/compositor/layer.h

Index: ui/compositor/layer.h
diff --git a/ui/compositor/layer.h b/ui/compositor/layer.h
index cfb301df92a0169a9fe66a512499f94814d1f5f3..d962c43188429edde48e1b3a60b9976817292c8d 100644
--- a/ui/compositor/layer.h
+++ b/ui/compositor/layer.h
@@ -264,6 +264,9 @@ class COMPOSITOR_EXPORT Layer
   static void ConvertPointToLayer(const Layer* source,
                                   const Layer* target,
                                   gfx::Point* point);
+  static void ConvertPointToLayerF(const Layer* source,
+                                   const Layer* target,
+                                   gfx::PointF* point);
 
   // Converts a transform to be relative to the given |ancestor|. Returns
   // whether success (that is, whether the given ancestor was really an
@@ -400,6 +403,10 @@ class COMPOSITOR_EXPORT Layer
 
   bool ConvertPointForAncestor(const Layer* ancestor, gfx::Point* point) const;
   bool ConvertPointFromAncestor(const Layer* ancestor, gfx::Point* point) const;
+  bool ConvertPointForAncestorF(const Layer* ancestor,
+                                gfx::PointF* point) const;
+  bool ConvertPointFromAncestorF(const Layer* ancestor,
+                                 gfx::PointF* point) const;
 
   // Implementation of LayerAnimatorDelegate
   void SetBoundsFromAnimation(const gfx::Rect& bounds) override;