Add a MultiChannel class.

Add a MultiChannel class.

This class multiplexes communication over a single underlying channel.
It will be useful for communicating individually with test suites and
tests over the server ↔ browser WebSocket connection.

See #5

R=kevmoo@google.com

Committed: https://github.com/dart-lang/unittest/commit/fb37c7a4098c4905ae104637748d45acbdef1159

[nweiz, 2015-02-25 22:26:30]

nweiz@google.com changed reviewers:
+ rnystrom@google.com
- kevmoo@google.com

[nweiz, 2015-02-25 22:26:31]

Sending this to Bob since Kevin is out.

[kevmoo, 2015-02-25 23:43:31]

kevmoo@google.com changed reviewers:
+ kevmoo@google.com

[kevmoo, 2015-02-25 23:43:31]

one nit, otherwise LGTM

https://codereview.chromium.org/957583002/diff/1/lib/src/util/multi_channel.dart
File lib/src/util/multi_channel.dart (right):

https://codereview.chromium.org/957583002/diff/1/lib/src/util/multi_channel.d...
lib/src/util/multi_channel.dart:50: /// This connects to the remote [stream]. If
this is closed, the remote [stream]
long line

[nweiz, 2015-02-26 00:15:58]

Code review changes

[nweiz, 2015-02-26 00:16:09]

https://codereview.chromium.org/957583002/diff/1/lib/src/util/multi_channel.dart
File lib/src/util/multi_channel.dart (right):

https://codereview.chromium.org/957583002/diff/1/lib/src/util/multi_channel.d...
lib/src/util/multi_channel.dart:50: /// This connects to the remote [stream]. If
this is closed, the remote [stream]
On 2015/02/25 23:43:31, kevmoo wrote:
> long line

Done.

[nweiz, 2015-02-26 00:16:17]

Committed patchset #2 (id:20001) manually as
fb37c7a4098c4905ae104637748d45acbdef1159 (presubmit successful).