Avoid duplicates in SPDY's write blocked list.

Avoid duplicates in SPDY's write blocked list.

Add a map from stream ID to priority to track which stream IDs are already in
the write blocked list.  And git cl format.

This CL lands server change 86595615 by birenroy.

BUG=

Committed: https://crrev.com/e4c688d207dba469310fcbbb64e281cd85f7cc5e
Cr-Commit-Position: refs/heads/master@{#319743}

[Bence, 2015-03-08 17:33:35]

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

[Bence, 2015-03-08 17:33:36]

Ryan, PTAL.  This change uses |unordered_map|, which is a C++11 library feature,
and thus not supported on Chromium yet.  Shall I just use a |map| instead?

[Ryan Hamilton, 2015-03-09 03:22:25]

std::unordered_map has O(1) access time. I think hash_map would be a better
choice. What do you think?

[Bence, 2015-03-09 14:59:18]

Ryan, PTAL.

[Ryan Hamilton, 2015-03-09 17:45:37]

lgtm

[Ryan Hamilton, 2015-03-09 17:46:05]

https://codereview.chromium.org/989523005/diff/20001/net/quic/quic_session.cc
File net/quic/quic_session.cc (right):

https://codereview.chromium.org/989523005/diff/20001/net/quic/quic_session.cc...
net/quic/quic_session.cc:105: write_blocked_streams_(true),
Should this be true or false? seems like false would be a better default.

[Bence, 2015-03-09 19:27:31]

The CQ bit was checked by bnc@chromium.org

[Bence, 2015-03-09 19:27:47]

The CQ bit was unchecked by bnc@chromium.org

[Bence, 2015-03-09 19:27:49]

The CQ bit was checked by bnc@chromium.org

[Bence, 2015-03-09 19:28:12]

The CQ bit was unchecked by bnc@chromium.org

[Bence, 2015-03-09 19:29:01]

The CQ bit was checked by bnc@chromium.org

[commit-bot: I haz the power, 2015-03-09 19:29:47]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/989523005/20001

[commit-bot: I haz the power, 2015-03-09 22:10:07]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-03-09 22:10:57]

Patchset 2 (id:??) landed as
https://crrev.com/e4c688d207dba469310fcbbb64e281cd85f7cc5e
Cr-Commit-Position: refs/heads/master@{#319743}