dart2js-kernel: Emit error trap for unimplemented features

dart2js-kernel: Emit error trap for unimplemented features

The test will fail with an error like the following, rather than proceed with an incorrect null value.

R=efortuna@google.com

TypeError: Cannot read property 'Unhandled ir.FunctionExpression  (dynamic x) → dynamic => x' of null
Committed: https://github.com/dart-lang/sdk/commit/ece7725d902b446469fe67ad96f9199543fe504a

[sra1, 2016-12-01 00:48:30]

Patchset #2 (id:20001) has been deleted

[sra1, 2016-12-01 00:49:58]

Description was changed from

==========
dart2js-kernel: Emit error trap for unimplemented features
==========

to

==========
dart2js-kernel: Emit error trap for unimplemented features

The test will fail with an error like the following, rather than proceed with an
incorrect null value.

TypeError: Cannot read property 'Unhandled ir.FunctionExpression  (dynamic x) →
dynamic => x' of null
==========

[sra1, 2016-12-01 00:49:58]

sra@google.com changed reviewers:
+ efortuna@google.com

[Emily Fortuna, 2016-12-01 00:51:12]

lgtm

YAY

[sra1, 2016-12-01 00:52:22]

Description was changed from

==========
dart2js-kernel: Emit error trap for unimplemented features

The test will fail with an error like the following, rather than proceed with an
incorrect null value.

TypeError: Cannot read property 'Unhandled ir.FunctionExpression  (dynamic x) →
dynamic => x' of null
==========

to

==========
dart2js-kernel: Emit error trap for unimplemented features

The test will fail with an error like the following, rather than proceed with an
incorrect null value.

R=efortuna@google.com

TypeError: Cannot read property 'Unhandled ir.FunctionExpression  (dynamic x) →
dynamic => x' of null
Committed:
https://github.com/dart-lang/sdk/commit/ece7725d902b446469fe67ad96f9199543fe504a
==========

[sra1, 2016-12-01 00:52:23]

Committed patchset #1 (id:1) manually as
ece7725d902b446469fe67ad96f9199543fe504a (presubmit successful).