Land Recent QUIC changes.

Land Recent QUIC changes.

Fix a bug in the quic_client where disconnecting and re-connecting would
re-use the same packet writer, and attempt to write to the same (now
closed) socket.

Merge internal change: 55509535

If the most significant byte of a QuicTag is 255 ('\xff'), print that
byte as a space rather than printing the QuicTag as a decimal number.

Add a unit test for QuicUtils::TagToString.

as "CRT " instead of its decimal value "4283716163".

Merge internal change: 55493160

Miscellaneous cleanup of the supported_versions CL.

Remove QuicVersionArrayToString. Replace the only
QuicVersionArrayToString call by QuicVersionVectorToString.

Add a protected supported_versions() getter method to QuicDispatcher
to allow access to supported_versions_ by derived classes of
QuicDispatcher.

Document the purpose of each combination of supported versions in
gfe/quic/end_to_end_test.cc.

"gfe2/quic_versions" and its value no longer has an extraneous comma
at the end. For example, "QUIC_VERSION_11,QUIC_VERSION_10" as opposed
to "QUIC_VERSION_11,QUIC_VERSION_10,"

Merge internal change: 55490062

Implement encoding and decoding of unsigned half precision floats in QUIC.

Merge internal change: 55454508

Annotate QUIC streams as server/client in DLOG output.

Merge internal change: 55419499

Expose methods for getting/setting the QUIC congestion manager's
congestion window value.

Merge internal change: 55416317

Return the unused server port once EndToEndTest has finished, to
reduce the chance PickUnusedPortOrDie will fail in the future.

Merge internal change: 55376533

This change hasn't been enabled in chromium.

Fix quic prober to use new QuicClient constructor which takes
QuicSupportedVersions as argument.

Merge internal change: 55353942

Change all QuicConfig constructors to DefaultQuicConfig.

Merge internal change: 55307326

Fixing TSAN warnings in the PacketDroppingTestWriter by adding a lock.

Merge internal change: 55234723

Fixing potential bugs with write blocking in QuicConnection.

Merge internal change: 55230366

Added back QuicVersionMax to fix borg TAP failures.

    This is a temporary fix until until CL 55170273 lands.

Merge internal change: 55173927

Test server/client various combinations of supported versions.

- Fix to handle if chrome were to send VERSION 11 and GFE supports
  version 10 and vice versa (fixes to setting of NULL decrypter).
  Fixed unit tests to handle different packet sizes between 11 and
  10 because of changes to Null encrypter/decrypter.
- Send version negotiation packet packet again (from server) if that
  packet is dropped.
- Changed end_to_end_test.cc to configure the client to support
  multiple versions and configure the server to support only one
  version and vice versa.
- Moved QuicVersionMax and QuicVersonMin to quic_test_utils.cc.

Most of the bug fixes are from rch.

  re-transmitting that packet again. Fixed bugs with server supporting
  VERSION 10 and chrome negotiating down from 11 to 10. Added tests for
  version negotiation and testing of various combinations of server and
  client version negotiation.

Merge internal change: 55168938

Don't cast a uint32 to int32 then to a uint64. Seen in test logs:

I1018 11:55:44.626228  1775 packet_dropping_test_writer.cc:50] Seeding packet loss with -508765393
I1018 11:55:44.626275  1775 packet_dropping_test_writer.cc:50] Seeding packet loss with 631710332

Merge internal change: 55135280

R=rch@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=231296

[ramant (doing other things), 2013-10-26 22:20:51]

This is the Final merged CL of recent QUIC changes (previous attempt failed).
thanks.

[Ryan Hamilton, 2013-10-27 04:01:34]

lgtm since I have reviewed all the individual changes.

[commit-bot: I haz the power, 2013-10-28 02:29:59]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/rtenneti@chromium.org/47283002/50001

[commit-bot: I haz the power, 2013-10-28 02:47:12]

Step "update" is always a major failure.
Look at the try server FAQ for more details.
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=win&number...

[commit-bot: I haz the power, 2013-10-28 05:13:11]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/rtenneti@chromium.org/47283002/320001

[commit-bot: I haz the power, 2013-10-28 08:39:28]

Change committed as 231296