Hey,
I wanted to share some updates about content_shell (a multi-processed version of chromium's test shell): meanwhile, it is possible to generate pixel results.
Out of 31431 tests that are executed on chromium-linux, 6234 did not match the expected results using content_shell, all others passed (80.17%)!
The biggest issue is that almost all testController methods are not yet implemented.
The next step will be to put an API between the test controllers defined for chromium's DRT, so content_shell can reuse those.
best
-jochen