This QUIC change includes:

This QUIC change includes:
1) Change QuicStream's life time. QuicStream is not deletable when it
has unacked data (including FIN).
2) Closed but not deletable QuicStream is moved to zombie_streams in
QuicSession.
3) Move ack listener to QuicStream.
4) QuicHeaderStream keeps track of unacked headers which have not null
ack listener.
5) Both QuicStream and QuicSession implement StreamNotifier which will
be notified when stream frame is acked or retransmitted.

Protected by FLAGS_quic_reloadable_flag_quic_use_stream_notifier.

Merge internal change: 156886444

R=rch@chromium.org
BUG=

[Jana, 2017-06-01 01:46:45]

The CQ bit was checked by jri@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2017-06-01 01:47:30]

Dry run: CQ is trying da patch.

Follow status at:
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-06-01 01:58:01]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2017-06-01 01:58:02]

Dry run: Try jobs failed on following builders:
  cast_shell_linux on master.tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/cast_shell_linu...)
  mac_chromium_compile_dbg_ng on master.tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_comp...)
  mac_chromium_rel_ng on master.tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_rel_...)

[Ryan Hamilton, 2017-06-01 16:51:23]

Any idea why all the bots are red?

[Jana, 2017-06-02 00:09:12]

On 2017/06/01 16:51:23, Ryan Hamilton wrote:
> Any idea why all the bots are red?

Yeah, these were all missing the stream_notifier_interface.h file, which I've
now added to the Final CL.

[Ryan Hamilton, 2017-06-02 00:18:51]

lgtm