LayoutTests/editing[/resources]/abe.jpg causes pixel test failures on certain machines (including build slaves) due to differences in JPEG decoding. I am going to attach a patch that replaces it with a PNG file which appears to be decoded consistently.
Created attachment 14097 [details] Replace the JPEG files with a PNG file
Comment on attachment 14097 [details] Replace the JPEG files with a PNG file rs=me
Landed in r20963.