Cleanup ChannelFactory interface

Cleanup ChannelFactory interface

Removed CreateDatagramChannel() (it was never used) and renamed
CreateStreamChannel() to CreateChannel()

BUG=402993
Committed: https://crrev.com/a29e1639cc388bcb603b025abe28f43cc33bfd09
Cr-Commit-Position: refs/heads/master@{#293863}

[Sergey Ulanov, 2014-09-08 20:28:35]

sergeyu@chromium.org changed reviewers:
+ wez@chromium.org

[Wez, 2014-09-08 20:42:46]

Won't we want to be able to create datagram channels once we switch to SCTP /
WebRTC, though?  That would let us switch to more efficient video and input
event protocols, for example.

[Sergey Ulanov, 2014-09-08 22:45:29]

On 2014/09/08 20:42:46, Wez wrote:
> Won't we want to be able to create datagram channels once we switch to SCTP /
> WebRTC, though?  That would let us switch to more efficient video and input
> event protocols, for example.

I'm going to send you another CL that also adds DatagramChannelFactory. It's
just not worth keeping both datagram and stream channels in one interface.

[Wez, 2014-09-08 22:49:09]

lgtm

[Sergey Ulanov, 2014-09-08 22:49:48]

The CQ bit was checked by sergeyu@chromium.org

[commit-bot: I haz the power, 2014-09-08 22:52:57]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/sergeyu@chromium.org/550383002/1

[commit-bot: I haz the power, 2014-09-09 06:12:28]

Committed patchset #1 (id:1) as 9613084312966285b795a42a4ba82d299c673ba4

[commit-bot: I haz the power, 2014-09-10 03:50:51]

Patchset 1 (id:??) landed as
https://crrev.com/a29e1639cc388bcb603b025abe28f43cc33bfd09
Cr-Commit-Position: refs/heads/master@{#293863}