Update analyzer

[danrubel]

This change updates the internals to use the newer analyzer API so that code_builder can be used with both analyzer 0.29.11 and 0.30.

[matanlurey]

I'm OOO until Thursday so maybe Nate or Kevin or Andrew can help?

[coveralls]

Coverage remained the same at 86.661% when pulling 941afb1 on update-analyzer into a97998f on master.

[danrubel]

Travis is unhappy because dartfmt passes on stable but fails for older 1.22.

[kevmoo]

Looks like you need to dartfmt @danrubel

[alorenzen]

Kevin, I think there may be a breaking change to dartfmt between versions. We can get either 1.22 or 1.23 passing, but not both.

[danrubel]

@kevmoo

• dartfmt was failing on stable for unrelated file (file that I did not change) test/e2e_test.dart
• I formatted that file as part of this PR (see above)
• Now dartfmt on stable is passing but failing on 1.22 (see comment above)

Not sure how to make two different versions of dartfmt happy about a file that I do not need to change.
How should I proceed?

[kevmoo]

We just need to ignore the lint for the other run

[danrubel]

Is there a variable I can check in tool/presubmit.sh to only perform the dartfmt check on stable?

[kevmoo]

You can look at ENV

[coveralls]

Coverage remained the same at 86.661% when pulling 3884f65 on update-analyzer into a97998f on master.

[coveralls]

Coverage remained the same at 86.661% when pulling c381d61 on update-analyzer into a97998f on master.

[danrubel]

Presubmit updated. PTAL