EDK: Add implementation of data pipe producer write threshold stuff.

EDK: Add implementation of data pipe producer write threshold stuff.

Entirely analogous to afe7672f3020a8b28fdbb316b3f7f91dcdd35ad0, which
did this for read threshold stuff.

* Mostly, "consumer" -> "producer", "read" -> "write", etc.
* Also doesn't expose thunks yet. (But does expose new handle signal.)
* The only non-mechanical changes versus the aforementioned change are
  in {LocalDataPipeImpl,RemoteConsumerDataPipeImpl}::
  ProducerGetHandleSignalsState() (these are essentially the same)
  and DataPipeImplTest.WriteThreshold.

R=vardhan@google.com

Committed: https://chromium.googlesource.com/external/mojo/+/2e39898acbbbceb386b71b54c0b1bfef1210fa63

[viettrungluu, 2016-04-12 22:21:06]

(this too, in case you missed it)

[vardhan, 2016-04-13 00:52:35]

lgtm

[viettrungluu, 2016-04-13 06:00:52]

Description was changed from

==========
EDK: Add implementation of data pipe producer write threshold stuff.

Entirely analogous to afe7672f3020a8b28fdbb316b3f7f91dcdd35ad0, which
did this for read threshold stuff.

* Mostly, "consumer" -> "producer", "read" -> "write", etc.
* Also doesn't expose thunks yet. (But does expose new handle signal.)
* The only non-mechanical changes versus the aforementioned change are
  in {LocalDataPipeImpl,RemoteConsumerDataPipeImpl}::
  ProducerGetHandleSignalsState() (these are essentially the same)
  and DataPipeImplTest.WriteThreshold.

R=vardhan@google.com
==========

to

==========
EDK: Add implementation of data pipe producer write threshold stuff.

Entirely analogous to afe7672f3020a8b28fdbb316b3f7f91dcdd35ad0, which
did this for read threshold stuff.

* Mostly, "consumer" -> "producer", "read" -> "write", etc.
* Also doesn't expose thunks yet. (But does expose new handle signal.)
* The only non-mechanical changes versus the aforementioned change are
  in {LocalDataPipeImpl,RemoteConsumerDataPipeImpl}::
  ProducerGetHandleSignalsState() (these are essentially the same)
  and DataPipeImplTest.WriteThreshold.

R=vardhan@google.com

Committed:
https://chromium.googlesource.com/external/mojo/+/2e39898acbbbceb386b71b54c0b...
==========

[viettrungluu, 2016-04-13 06:00:54]

Committed patchset #1 (id:1) manually as
2e39898acbbbceb386b71b54c0b1bfef1210fa63 (presubmit successful).