Fix declaration of GenericTypeAliasElementForLink.

Fix declaration of GenericTypeAliasElementForLink.

This class needs to implement FunctionTypeAliasElementForLink so that
it can be stored in CompilationUnitElementForLink._functionTypeAliases
(and returned by CompilationUnitElementForLink.functionTypeAliases)
without incurring checked mode errors.

R=scheglov@google.com

Committed: https://github.com/dart-lang/sdk/commit/6866291fb386f1e4d77d8dcf7c2208f15c7b8313

[Paul Berry, 2017-05-17 20:57:19]

paulberry@google.com changed reviewers:
+ brianwilkerson@google.com, scheglov@google.com

[scheglov, 2017-05-17 20:58:41]

LGTM

[Paul Berry, 2017-05-17 21:03:49]

Description was changed from

==========
Fix declaration of GenericTypeAliasElementForLink.

This class needs to implement FunctionTypeAliasElementForLink so that
it can be stored in CompilationUnitElementForLink._functionTypeAliases
(and returned by CompilationUnitElementForLink.functionTypeAliases)
without incurring checked mode errors.
==========

to

==========
Fix declaration of GenericTypeAliasElementForLink.

This class needs to implement FunctionTypeAliasElementForLink so that
it can be stored in CompilationUnitElementForLink._functionTypeAliases
(and returned by CompilationUnitElementForLink.functionTypeAliases)
without incurring checked mode errors.

R=scheglov@google.com

Committed:
https://github.com/dart-lang/sdk/commit/6866291fb386f1e4d77d8dcf7c2208f15c7b8313
==========

[Paul Berry, 2017-05-17 21:03:51]

Committed patchset #1 (id:1) manually as
6866291fb386f1e4d77d8dcf7c2208f15c7b8313 (presubmit successful).

[Brian Wilkerson, 2017-05-17 21:42:37]

lgtm