Make summary format stable when adding getters to idl.

Make summary format stable when adding getters to idl.

This mechanism is the same as the "id" mechanism described in
http://google.github.io/flatbuffers/flatbuffers_guide_writing_schema.html,
except that for us the ids are always mandatory.

R=scheglov@google.com

Committed: https://github.com/dart-lang/sdk/commit/5a58e0963998a79ff02f0727dee955761a2d6570

[Paul Berry, 2016-02-11 19:10:27]

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

[Paul Berry, 2016-02-11 19:10:27]

https://codereview.chromium.org/1691923002/diff/1/pkg/analyzer/lib/src/summar...
File pkg/analyzer/lib/src/summary/idl.dart (right):

https://codereview.chromium.org/1691923002/diff/1/pkg/analyzer/lib/src/summar...
pkg/analyzer/lib/src/summary/idl.dart:88: @Id(4)
Note: I used smaller ids for the most frequently used fields, on the theory that
it would make the resulting output smaller by decreasing the average size of
vtables.  It did, but the savings was so small that it hardly matters (~0.05%
improvement).

[scheglov, 2016-02-11 19:18:31]

LGTM

[Paul Berry, 2016-02-11 22:38:28]

Description was changed from

==========
Make summary format stable when adding getters to idl.

This mechanism is the same as the "id" mechanism described in
http://google.github.io/flatbuffers/flatbuffers_guide_writing_schema.html,
except that for us the ids are always mandatory.
==========

to

==========
Make summary format stable when adding getters to idl.

This mechanism is the same as the "id" mechanism described in
http://google.github.io/flatbuffers/flatbuffers_guide_writing_schema.html,
except that for us the ids are always mandatory.

R=scheglov@google.com

Committed:
https://github.com/dart-lang/sdk/commit/5a58e0963998a79ff02f0727dee955761a2d6570
==========

[Paul Berry, 2016-02-11 22:38:29]

Committed patchset #1 (id:1) manually as
5a58e0963998a79ff02f0727dee955761a2d6570 (presubmit successful).