Revert of [Cronet] Add QUIC experimental params

Revert of [Cronet] Add QUIC experimental params (patchset #7 id:140001 of https://codereview.chromium.org/1448583003/ )

Reason for revert:
[MemSheriff] Reverting CL that contains uninitialized reads that show up in multiple tests on MSan and Valgrind MFYI bots, e.g.: http://build.chromium.org/p/chromium.memory.fyi/builders/Linux%20MSan%20Tests/builds/11562/steps/browser_tests/logs/ExtensionPreferenceApiTest.DataReductionProxy

Original issue's description:
> [Cronet] Add QUIC experimental params
>
> This CL plumbs four QUIC experimental params (
> quic_store_server_configs_in_properties,
> quic_delay_tcp_race,
> quic_max_number_of_lossy_connections,
> quic_packet_loss_threshold) from Cronet's
> setExperimentalOptions API to net::HttpNetworkSession.
>
> This CL also adds a unittests target to run the unittests.
> A followup CL will enable the unittests on the cronet bots.
>
> BUG=545118
>
> Committed: https://crrev.com/fde0b72c603cd111c36ca4cc416d82a7395bcf6c
> Cr-Commit-Position: refs/heads/master@{#360454}

TBR=rtenneti@google.com,rtenneti@chromium.org,mef@chromium.org,xunjieli@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=545118
Committed: https://crrev.com/d15ad369c19ff184a0cc633bf133a18440d6c13a
Cr-Commit-Position: refs/heads/master@{#360509}

[Derek Bruening, 2015-11-19 03:08:26]

Created Revert of [Cronet] Add QUIC experimental params

[commit-bot: I haz the power, 2015-11-19 03:08:40]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1454333002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1454333002/1

[commit-bot: I haz the power, 2015-11-19 03:10:10]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-11-19 03:10:58]

Patchset 1 (id:??) landed as
https://crrev.com/d15ad369c19ff184a0cc633bf133a18440d6c13a
Cr-Commit-Position: refs/heads/master@{#360509}