Because we dump dart errors to LOG(ERROR) (stderr) instead
of console.log / stdout, tests with dart errors just "pass"
and we don't notice they're not running.
This was the case with canvas-rounded-corners.sky.
I don't think this test actually passes yet, despite it
claiming to, but I at least have made it run and not crash.
Required me commenting out a ton of CanvasRenderingContext2D, but
that's fine, it wasn't actually working and it's better to have
it be compiling valid dart.
R=abarth@chromium.org, ojan@chromium.org
BUG=
Review URL: https://codereview.chromium.org/936563002
This was the last complicated piece of removing
platform/heap, the rest should be trivial to delete
after removing :trace overrides and mass-renaming
the various WillBe types to their old versions.
R=abarth@chromium.org
Review URL: https://codereview.chromium.org/683593002
