Add analysis_server_client without analysis_server

Add analysis_server_client without analysis_server.

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

Committed: https://github.com/dart-lang/sdk/commit/4e42dbc1f964f034d67fc93f65271343275d83c5

[maxkim, 2017-08-08 21:01:58]

Description was changed from

==========
Add analysis_server_client without analysis_server

BUG=
==========

to

==========
Add analysis_server_client without analysis_server.

BUG=
==========

[maxkim, 2017-08-08 21:01:58]

maxkim@google.com changed reviewers:
+ brianwilkerson@google.com, konstantin.scheglov@gmail.com

[maxkim, 2017-08-08 21:04:15]

maxkim@google.com changed reviewers:
+ scheglov@google.com
- konstantin.scheglov@gmail.com

[scheglov, 2017-08-08 21:06:00]

I don't have context for this change.

[maxkim, 2017-08-08 21:12:46]

On 2017/08/08 21:06:00, scheglov wrote:
> I don't have context for this change.

This is a package for the client-server JSON communication between
analysis_server. This is one of the tools I'll be needing for dartwing; instead
of just adding it locally within dartwing, adding it as a stand-alone package
seems to be more useful.

[scheglov, 2017-08-08 21:18:56]

The code lgtm.
But I think Brian should also take a look.

https://codereview.chromium.org/2994723003/diff/20001/pkg/analysis_server_cli...
File pkg/analysis_server_client/lib/analysis_server_client.dart (right):

https://codereview.chromium.org/2994723003/diff/20001/pkg/analysis_server_cli...
pkg/analysis_server_client/lib/analysis_server_client.dart:17: Process _process;
final?

https://codereview.chromium.org/2994723003/diff/20001/pkg/analysis_server_cli...
pkg/analysis_server_client/lib/analysis_server_client.dart:32: Future
flushCommands() {
Future<Null>, I presume?

https://codereview.chromium.org/2994723003/diff/20001/pkg/analysis_server_cli...
pkg/analysis_server_client/lib/analysis_server_client.dart:49:
_pendingCommands.remove(id);
Map.remove() already return the value.

[Brian Wilkerson, 2017-08-08 21:38:08]

lgtm

[maxkim, 2017-08-08 21:57:50]

Description was changed from

==========
Add analysis_server_client without analysis_server.

BUG=
==========

to

==========
Add analysis_server_client without analysis_server.

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

Committed:
https://github.com/dart-lang/sdk/commit/4e42dbc1f964f034d67fc93f65271343275d83c5
==========

[maxkim, 2017-08-08 21:57:51]

Committed patchset #3 (id:40001) manually as
4e42dbc1f964f034d67fc93f65271343275d83c5 (presubmit successful).