Avoid SpdyHeaderBlock copy in SpdyStream::OnPushPromiseHeadersReceived().

Avoid SpdyHeaderBlock copy in SpdyStream::OnPushPromiseHeadersReceived().

* Change HeaderCoalescer::headers() to release_headers() passing ownership of
  SpdyHeaderBlock.
* Change BufferedSpdyFramerVisitorInterface::OnHeaders() and OnPushPromise() to
  take SpdyHeaderBlock by value, allowing for move.
* Plumb move through SpdySession::TryCreatePushStream().
* Avoid SpdyHeaderBlock copy in SpdyStream::OnPushPromiseHeadersReceived().

BUG=621905
Committed: https://crrev.com/b8eba6a3e2e46a9d3d4c7be931b04d0a18f71d22
Cr-Commit-Position: refs/heads/master@{#407554}

[Bence, 2016-07-22 19:23:33]

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

[commit-bot: I haz the power, 2016-07-22 19:24:39]

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, 2016-07-22 20:59:31]

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

[commit-bot: I haz the power, 2016-07-22 20:59:32]

Dry run: This issue passed the CQ dry run.

[Bence, 2016-07-23 00:17:31]

bnc@chromium.org changed reviewers:
+ rch@chromium.org

[Bence, 2016-07-23 00:17:32]

Ryan: PTAL.  Thank you.

[Ryan Hamilton, 2016-07-25 17:58:01]

lgtm

[Bence, 2016-07-25 19:02:39]

The CQ bit was checked by bnc@chromium.org

[commit-bot: I haz the power, 2016-07-25 19:03:15]

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, 2016-07-25 20:03:58]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-07-25 20:05:04]

Description was changed from

==========
Avoid SpdyHeaderBlock copy in SpdyStream::OnPushPromiseHeadersReceived().

* Change HeaderCoalescer::headers() to release_headers() passing ownership of
  SpdyHeaderBlock.
* Change BufferedSpdyFramerVisitorInterface::OnHeaders() and OnPushPromise() to
  take SpdyHeaderBlock by value, allowing for move.
* Plumb move through SpdySession::TryCreatePushStream().
* Avoid SpdyHeaderBlock copy in SpdyStream::OnPushPromiseHeadersReceived().

BUG=621905
==========

to

==========
Avoid SpdyHeaderBlock copy in SpdyStream::OnPushPromiseHeadersReceived().

* Change HeaderCoalescer::headers() to release_headers() passing ownership of
  SpdyHeaderBlock.
* Change BufferedSpdyFramerVisitorInterface::OnHeaders() and OnPushPromise() to
  take SpdyHeaderBlock by value, allowing for move.
* Plumb move through SpdySession::TryCreatePushStream().
* Avoid SpdyHeaderBlock copy in SpdyStream::OnPushPromiseHeadersReceived().

BUG=621905

Committed: https://crrev.com/b8eba6a3e2e46a9d3d4c7be931b04d0a18f71d22
Cr-Commit-Position: refs/heads/master@{#407554}
==========

[commit-bot: I haz the power, 2016-07-25 20:05:05]

Patchset 1 (id:??) landed as
https://crrev.com/b8eba6a3e2e46a9d3d4c7be931b04d0a18f71d22
Cr-Commit-Position: refs/heads/master@{#407554}