Revert of Landing Recent QUIC Changes.

Revert of Landing Recent QUIC Changes. (patchset #1 id:1 of https://codereview.chromium.org/515303003/)

Reason for revert:
Reverting to see if it fixes the following issue. Crash rate has gone up by 10 times.

BUG=409191
Original issue's description:
> Landing Recent QUIC Changes.
> 
> Nest a QUIC SerializedPacket inside a QUIC QueuedPacket.
> 
> Merge internal change: 74239145
> https://codereview.chromium.org/509203003/
> 
> 
> Remove PacketType from QUIC because the QUEUED type is not used and the
> other types can be reduced to a bool.
> 
> Merge internal change: 74148481
> https://codereview.chromium.org/515003003/
> 
> 
> Don't send a QUIC SCUP message until after handshake confirmed.
> 
> A server config update was occasionally being sent before the crypto
> handshake was complete, causing the client to close the connection.
> 
> Merge internal change: 74132773
> https://codereview.chromium.org/516713002/
> 
> 
> Change TransmissionInfo's all_transmissions SequenceNumberSet* to
> default to NULL, and only be present if there are multiple transmissions.
> 
> Estimated to save ~2% of CPU.
> 
> Merge internal change: 74076012
> https://codereview.chromium.org/509073004/
> 
> 
> Log the quic version for internal server tracing.
> Not used in production.
> 
> Merge internal change: 74069715
> https://codereview.chromium.org/514043002/
> 
> 
> Optimize QuicUnackedPacketMap by changing from a LinkedHashMap to a
> deque.
> 
> Estimated to save ~3% of CPU based on pprof profiling of 100 large gets
> on tools/quic/end_to_end_test.cc.
> 
> Merge internal change: 74054196
> https://codereview.chromium.org/514033002/
> 
> 
> Unit test for empty packet closes QUIC connection bug.
> 
> Merge internal change: 74041239
> https://codereview.chromium.org/495423011/
> 
> 
> Log the QUIC transmission type in QUIC internal server trace visitor.
> Not used in production.
> 
> Merge internal change: 73895739
> https://codereview.chromium.org/514023002/
> 
> 
> Not used in production. Log whether a QUIC packet sent was a crypto
> packet or not for internal server side tracing.
> 
> Merge internal change: 73894063
> https://codereview.chromium.org/515003002/
> 
> 
> Fix a QUIC bug in which PING frames were not being ACK'd.
> 
> Merge internal change: 73837644
> https://codereview.chromium.org/512933005/
> 
> R=rch@chromium.org
> 
> Committed: https://chromium.googlesource.com/chromium/src/+/27f3f1894f09a96112df50fddd32895b4677f949

TBR=rch@chromium.org
NOTREECHECKS=true
NOTRY=true

Committed: https://crrev.com/00f180a54e0ebf53bcadebc9983ee406818f232b
Cr-Commit-Position: refs/heads/master@{#292722}

[ramant (doing other things), 2014-08-29 23:36:27]

Created Revert of Landing Recent QUIC Changes.

[commit-bot: I haz the power, 2014-08-29 23:39:04]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/rtenneti@chromium.org/523813003/1

[commit-bot: I haz the power, 2014-08-29 23:54:18]

Committed patchset #1 (id:1) as 3a0973acdbfa8a0645914a8c16a3693924fecc8d

[commit-bot: I haz the power, 2014-09-10 03:11:55]

Patchset 1 (id:??) landed as
https://crrev.com/00f180a54e0ebf53bcadebc9983ee406818f232b
Cr-Commit-Position: refs/heads/master@{#292722}