Add IsolateChannel.connect* constructors.

Add IsolateChannel.connect* constructors.

These constructors use a lightweight protocol to establish a two-way
connection over a previously-one-way connection.

R=rnystrom@google.com

Committed: https://github.com/dart-lang/stream_channel/commit/f72ea5afa0edd64e18c03cad890eb8e7085bd28e

[Bob Nystrom, 2016-01-27 20:39:47]

lgtm

https://codereview.chromium.org/1638183002/diff/1/lib/src/isolate_channel.dart
File lib/src/isolate_channel.dart (right):

https://codereview.chromium.org/1638183002/diff/1/lib/src/isolate_channel.dar...
lib/src/isolate_channel.dart:84: var receivePort = new ReceivePort();
Go home, Reitveld diff algorithm, you are drunk.

[nweiz, 2016-01-27 23:28:49]

Description was changed from

==========
Add IsolateChannel.connect* constructors.

These constructors use a lightweight protocol to establish a two-way
connection over a previously-one-way connection.

R=rnystrom@google.com
==========

to

==========
Add IsolateChannel.connect* constructors.

These constructors use a lightweight protocol to establish a two-way
connection over a previously-one-way connection.

R=rnystrom@google.com

Committed:
https://github.com/dart-lang/stream_channel/commit/f72ea5afa0edd64e18c03cad89...
==========

[nweiz, 2016-01-27 23:28:50]

Committed patchset #1 (id:1) manually as
f72ea5afa0edd64e18c03cad890eb8e7085bd28e (presubmit successful).