On Chromium Windows, DumpRenderTree produces pixel results with text that isn't anti-aliased. This is most noticeable with rotated text (e.g. LayoutTests/fast/transforms/transformed-caret.png) and is quite noticeable with header fonts.
This is deliberate, and has been true for a long time, making it easier to get reproducible results on different machines that may have different tuned settings for antialiasing and cleartype.
(In reply to comment #1) > This is deliberate, and has been true for a long time, making it easier to get reproducible results on different machines that may have different tuned settings for antialiasing and cleartype. That makes a lot of sense. Thanks for the quick explanation and apologies for all the noise.