Improve error message when super constructor is invalid

Improve error message when super constructor is invalid

Instead of “unresolved call to super constructor”, adapt error
message if the super class contains a factory constructor with
the same name.

Also add this error message clarification to constructor redirection
clauses.

BUG=#11202
R=fschneider@google.com

Committed: https://github.com/dart-lang/sdk/commit/a5187ae01d48c702bb185d9beb9ea68c44f0b246

[hausner, 2017-02-06 22:34:33]

Description was changed from

==========
Improve error message when super constructor is invalid

Instead of “unresolved call to super constructor”, adapt error
message if the super class contains a factory constructor with
the same name.

BUG=#11202
==========

to

==========
Improve error message when super constructor is invalid

Instead of “unresolved call to super constructor”, adapt error
message if the super class contains a factory constructor with
the same name.

Also add this error message clarification to constructor redirection
clauses.

BUG=#11202
==========

[hausner, 2017-02-06 22:34:33]

hausner@google.com changed reviewers:
+ fschneider@google.com

[hausner, 2017-02-06 22:34:58]

Easy fix to make error message more helpful.

[Florian Schneider, 2017-02-06 22:38:55]

Lgtm

[hausner, 2017-02-06 22:48:20]

Description was changed from

==========
Improve error message when super constructor is invalid

Instead of “unresolved call to super constructor”, adapt error
message if the super class contains a factory constructor with
the same name.

Also add this error message clarification to constructor redirection
clauses.

BUG=#11202
==========

to

==========
Improve error message when super constructor is invalid

Instead of “unresolved call to super constructor”, adapt error
message if the super class contains a factory constructor with
the same name.

Also add this error message clarification to constructor redirection
clauses.

BUG=#11202
R=fschneider@google.com

Committed:
https://github.com/dart-lang/sdk/commit/a5187ae01d48c702bb185d9beb9ea68c44f0b246
==========

[hausner, 2017-02-06 22:48:21]

Committed patchset #1 (id:1) manually as
a5187ae01d48c702bb185d9beb9ea68c44f0b246 (presubmit successful).