Modify dump_inferred_types.dart to handle missing unlinked units.

Modify dump_inferred_types.dart to handle missing unlinked units.

In rare cases a summary package bundle may contain a LinkedLibrary
object but not its corresponding UnlinkedUnits.  (This could happen, for
instance, if both a package and one of its dependencies contain
libraries that reference the same file as a "part"--in this case, the
UnlinkedUnit for the part might only be included in one of the package
bundles, because it is redundant in the other).

This CL modifies dump_inferred_types.dart so that it doesn't crash in
this rare corner case.

R=scheglov@google.com

Committed: https://github.com/dart-lang/sdk/commit/09c98dc45690a63da1e5e58a90845c69e020528e

[Paul Berry, 2016-04-27 21:19:05]

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

[scheglov, 2016-04-27 21:20:15]

LGTM

[Paul Berry, 2016-04-27 21:22:33]

Description was changed from

==========
Modify dump_inferred_types.dart to handle missing unlinked units.

In rare cases a summary package bundle may contain a LinkedLibrary
object but not its corresponding UnlinkedUnits.  (This could happen, for
instance, if both a package and one of its dependencies contain
libraries that reference the same file as a "part"--in this case, the
UnlinkedUnit for the part might only be included in one of the package
bundles, because it is redundant in the other).

This CL modifies dump_inferred_types.dart so that it doesn't crash in
this rare corner case.
==========

to

==========
Modify dump_inferred_types.dart to handle missing unlinked units.

In rare cases a summary package bundle may contain a LinkedLibrary
object but not its corresponding UnlinkedUnits.  (This could happen, for
instance, if both a package and one of its dependencies contain
libraries that reference the same file as a "part"--in this case, the
UnlinkedUnit for the part might only be included in one of the package
bundles, because it is redundant in the other).

This CL modifies dump_inferred_types.dart so that it doesn't crash in
this rare corner case.

R=scheglov@google.com

Committed:
https://github.com/dart-lang/sdk/commit/09c98dc45690a63da1e5e58a90845c69e020528e
==========

[Paul Berry, 2016-04-27 21:22:35]

Committed patchset #1 (id:1) manually as
09c98dc45690a63da1e5e58a90845c69e020528e (presubmit successful).