Improve used name relations and fields indexing.

Improve used name relations and fields indexing.

I'm in the process of switching Analysis Server to the new index and
found that we need these changes to make search tests pass.
Refactorings don't need to know whether names are read or written,
but users might (or might not) want to know this.

R=brianwilkerson@google.com
BUG=

Committed: https://github.com/dart-lang/sdk/commit/30c49a0eab26b20745e92ebac17ac8961e8dde10

[Brian Wilkerson, 2016-03-11 18:14:03]

LGTM

https://codereview.chromium.org/1787803003/diff/1/pkg/analysis_server/test/se...
File pkg/analysis_server/test/services/search/search_engine2_test.dart (right):

https://codereview.chromium.org/1787803003/diff/1/pkg/analysis_server/test/se...
pkg/analysis_server/test/services/search/search_engine2_test.dart:742:
ExpectedMatch _expectIdQ(Element element, MatchKind kind, String search,
nit: it might be good to document what 'Q' and 'QU' mean.

[scheglov, 2016-03-11 18:42:06]

Description was changed from

==========
Improve used name relations and fields indexing.

I'm in the process of switching Analysis Server to the new index and
found that we need these changes to make search tests pass.
Refactorings don't need to know whether names are read or written,
but users might (or might not) want to know this.

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

to

==========
Improve used name relations and fields indexing.

I'm in the process of switching Analysis Server to the new index and
found that we need these changes to make search tests pass.
Refactorings don't need to know whether names are read or written,
but users might (or might not) want to know this.

R=brianwilkerson@google.com
BUG=

Committed:
https://github.com/dart-lang/sdk/commit/30c49a0eab26b20745e92ebac17ac8961e8dde10
==========

[scheglov, 2016-03-11 18:42:07]

Committed patchset #1 (id:1) manually as
30c49a0eab26b20745e92ebac17ac8961e8dde10 (presubmit successful).