fix DDC build: some inference failures are reported now

fix DDC build: some inference failures are reported now, so we need to update some test type annotations

Committed: https://github.com/dart-lang/dev_compiler/commit/1c957d548d53cb0dbea9fc442d68dde5d6126a34

[Jennifer Messerly, 2016-09-15 00:32:33]

Description was changed from

==========
fix types

TBR=leafp@google.com
==========

to

==========
fix DDC build: some inference failures are reported now, so we need to update
some test type annotations
==========

[Jennifer Messerly, 2016-09-15 00:33:50]

TBR but examples might be worth a look

https://codereview.chromium.org/2347493002/diff/1/pkg/dev_compiler/test/codeg...
File pkg/dev_compiler/test/codegen/language/await_for_test.dart (right):

https://codereview.chromium.org/2347493002/diff/1/pkg/dev_compiler/test/codeg...
pkg/dev_compiler/test/codegen/language/await_for_test.dart:59: Future
consumeSomeOfInfinite() async {
I guess we don't do this automatically because it's a top-level method?

https://codereview.chromium.org/2347493002/diff/1/pkg/dev_compiler/test/codeg...
File pkg/dev_compiler/test/codegen/lib/html/indexeddb_1_test.dart (right):

https://codereview.chromium.org/2347493002/diff/1/pkg/dev_compiler/test/codeg...
pkg/dev_compiler/test/codegen/lib/html/indexeddb_1_test.dart:98: idb.Transaction
transaction = db.transactionList([storeName], 'readwrite');
inference failure was down here at [storeName] ... these remind me of that bug
where we had considered ignoring "dynamic" from our inference. If we did that,
neither of these tests would've needed to change.

[Jennifer Messerly, 2016-09-15 00:39:33]

Description was changed from

==========
fix DDC build: some inference failures are reported now, so we need to update
some test type annotations
==========

to

==========
fix DDC build: some inference failures are reported now, so we need to update
some test type annotations

Committed:
https://github.com/dart-lang/dev_compiler/commit/1c957d548d53cb0dbea9fc442d68...
==========

[Jennifer Messerly, 2016-09-15 00:39:34]

Committed patchset #1 (id:1) manually as
1c957d548d53cb0dbea9fc442d68dde5d6126a34 (presubmit successful).