[Mac] Enable MacViews site settings bubble behind --enable-mac-views-dialogs.

ui/gfx/mac/coordinate_conversion.mm

Index: ui/gfx/mac/coordinate_conversion.mm
diff --git a/ui/gfx/mac/coordinate_conversion.mm b/ui/gfx/mac/coordinate_conversion.mm
index b2c41a455d6c96c4aa18e2928937c1c93f3cdb45..c2fdb94e950926dd58f32230fca3cf711f26377c 100644
--- a/ui/gfx/mac/coordinate_conversion.mm
+++ b/ui/gfx/mac/coordinate_conversion.mm
@@ -34,4 +34,12 @@ gfx::Rect ScreenRectFromNSRect(const NSRect& rect) {
                    rect.size.height);
 }
 
+NSPoint ScreenPointToNSPoint(const gfx::Point& point) {
+  return NSMakePoint(point.x(), PrimaryDisplayHeight() - point.y());
+}
+
+gfx::Point ScreenPointFromNSPoint(const NSPoint& point) {
+  return gfx::Point(point.x, PrimaryDisplayHeight() - point.y);
+}
+
 }  // namespace gfx