Remove implicit flooring Scale() method from Point and Size.

ui/gfx/point_f.h

Index: ui/gfx/point_f.h
diff --git a/ui/gfx/point_f.h b/ui/gfx/point_f.h
index ff1c4dfdff0912077ea580070c0ffcc53b191964..a0b367f9789ea165b4efd8873720c3223e96d6ca 100644
--- a/ui/gfx/point_f.h
+++ b/ui/gfx/point_f.h
@@ -19,6 +19,14 @@ class UI_EXPORT PointF : public PointBase<PointF, float> {
   PointF(float x, float y);
   ~PointF();
 
+  PointF Scale(float scale) const WARN_UNUSED_RESULT {
+    return Scale(scale, scale);
+  }
+
+  PointF Scale(float x_scale, float y_scale) const WARN_UNUSED_RESULT {
+    return PointF(x() * x_scale, y() * y_scale);
+  }
+
   // Returns a string representation of point.
   std::string ToString() const;
 };