Keep resolution results in more cases. Invalidate only errors.

Keep resolution results in more cases. Invalidate only errors.

1. Subclassing does not change resolution, so we need to invalidate
   only HINTS (for invalid @override) and VERIFY_ERRORS (for
   unimplemented or type-conflicting (from multiple supers) members).

2. OTOH instantiation of a class with a (members) delta does not change
   nor resolution, not the set of errors.

R=brianwilkerson@google.com
BUG=

Committed: https://github.com/dart-lang/sdk/commit/0ba58ef1b69d31e58570b24d5ef6d6d20a280a5e

[Brian Wilkerson, 2016-07-11 13:51:05]

lgtm

[scheglov, 2016-07-11 16:27:07]

Description was changed from

==========
Keep resolution results in more cases. Invalidate only errors.

1. Subclassing does not change resolution, so we need to invalidate
   only HINTS (for invalid @override) and VERIFY_ERRORS (for
   unimplemented or type-conflicting (from multiple supers) members).

2. OTOH instantiation of a class with a (members) delta does not change
   nor resolution, not the set of errors.

R=brianwilkerson@google.com
BUG=
==========

to

==========
Keep resolution results in more cases. Invalidate only errors.

1. Subclassing does not change resolution, so we need to invalidate
   only HINTS (for invalid @override) and VERIFY_ERRORS (for
   unimplemented or type-conflicting (from multiple supers) members).

2. OTOH instantiation of a class with a (members) delta does not change
   nor resolution, not the set of errors.

R=brianwilkerson@google.com
BUG=

Committed:
https://github.com/dart-lang/sdk/commit/0ba58ef1b69d31e58570b24d5ef6d6d20a280a5e
==========

[scheglov, 2016-07-11 16:27:09]

Committed patchset #1 (id:1) manually as
0ba58ef1b69d31e58570b24d5ef6d6d20a280a5e (presubmit successful).