Speed up kernel sanity checks.

Speed up kernel sanity checks.

Sanity checks now run in a single pass rather than two, and
instead of building a set consisting of all members, it uses
a bit from the transformer flags to remember which members are
not orphaned.

As an additional check, it now checks that members are not
declared more than once.

R=kmillikin@google.com

Committed: https://github.com/dart-lang/sdk/commit/084bd8add28dea0d25bff2015a1cdfd59bc9405b

[asgerf, 2016-11-24 15:55:51]

asgerf@google.com changed reviewers:
+ kmillikin@google.com

[Kevin Millikin (Google), 2016-11-25 09:53:57]

LGTM.

[asgerf, 2016-11-25 11:02:09]

Description was changed from

==========
Speed up kernel sanity checks.

Sanity checks now run in a single pass rather than two, and
instead of building a set consisting of all members, it uses
a bit from the transformer flags to remember which members are
not orphaned.

As an additional check, it now checks that members are not
declared more than once.
==========

to

==========
Speed up kernel sanity checks.

Sanity checks now run in a single pass rather than two, and
instead of building a set consisting of all members, it uses
a bit from the transformer flags to remember which members are
not orphaned.

As an additional check, it now checks that members are not
declared more than once.

R=kmillikin@google.com

Committed:
https://github.com/dart-lang/sdk/commit/084bd8add28dea0d25bff2015a1cdfd59bc9405b
==========

[asgerf, 2016-11-25 11:02:12]

Committed patchset #3 (id:40001) manually as
084bd8add28dea0d25bff2015a1cdfd59bc9405b (presubmit successful).