2d58c39615
Converts several AIKS golden tests to use DisplayList as the mechanism. In order to convert some of the tests, new factory methods were added to DlColor and tested with new unit tests (an earlier golden test conversion PR had a version of this as well). Also, a new DisplayList record op was created for ClipOval to handle the AIKS clipping golden tests, but this new recording op is not used from Flutter `ui` code (no plumbing to call it from `lib/ui/painting` or to convert any other DisplayList call to use the new record). An earlier attempt to add the new recording op caused a large number of golden changes upstream so this version will only be used for internal tests and support to use it from apps will follow in more targeted PRs to better manage golden changes. This PR should not result in any changes to goldens outside of internal engine tests.