Special items in this block:
- checked_mode_helper is a helper library that needed extensive modifications. Fixing it up for Dart 2.0 meant simultaneously migrating
its users in blocks 113 and 163. Renamed it to dynamic_type_helper to try to reflect what it's actually doing now.
- Many minor breakouts of compile-time errors and conversion from static warnings.
BUG=
R=bkonyi@google.com
Review-Url: https://codereview.chromium.org/2999733002 .
There are far too many files here to review everyone carefully.
Spot checking most of the diffs look good as test code is generally written
with less care than application code so lots of ugly formatting get through.
If people notice files where the automated formatting bothers them feel free
to comment indicating file names and I'll move spaces within comments to make
the formatting cleaner and use comments to force block formatting as I have
done for other case where formatting looked bad.
BUG=
R=efortuna@google.com
Review-Url: https://codereview.chromium.org/2771453003 .