The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/9bf2667a46fd3ba3f7c4f4c69d2217ca68959a45

commit 9bf2667a46fd3ba3f7c4f4c69d2217ca68959a45
Author: tbansal <tbansal@chromium.org>
Date: Wed May 11 18:32:45 2016

Enable QUIC for proxies only when QUIC is enabled

1. Remove |enable_quic_for_proxies| from
HttpNetworkSession::Params. Instead, use |enable_quic|.
This change brings QUIC proxy code closer to
the global QUIC code.

2. Do not plumb |enable_quic| down to Data Reduction
Proxy (DRP) IO Data. Instead, DRP reads |enable_quic| from
HttpNetworkSession::Params directly.

3. Chrome will use QUIC to connect to DRP if QUIC is enabled
globally and Chrome is in DRP QUIC field trial. With this change
 DRP will use a QUIC proxy only when it is initialized using client
config service (and not statically configured proxies).

BUG= 609177 

Review-Url: https://codereview.chromium.org/1862193002
Cr-Commit-Position: refs/heads/master@{#393002}

[modify] https://crrev.com/9bf2667a46fd3ba3f7c4f4c69d2217ca68959a45/android_webview/browser/aw_browser_context.cc
[modify] https://crrev.com/9bf2667a46fd3ba3f7c4f4c69d2217ca68959a45/chrome/browser/io_thread.cc
[modify] https://crrev.com/9bf2667a46fd3ba3f7c4f4c69d2217ca68959a45/chrome/browser/io_thread.h
[modify] https://crrev.com/9bf2667a46fd3ba3f7c4f4c69d2217ca68959a45/chrome/browser/io_thread_unittest.cc
[modify] https://crrev.com/9bf2667a46fd3ba3f7c4f4c69d2217ca68959a45/chrome/browser/net/spdyproxy/data_reduction_proxy_chrome_io_data.cc
[modify] https://crrev.com/9bf2667a46fd3ba3f7c4f4c69d2217ca68959a45/chrome/browser/net/spdyproxy/data_reduction_proxy_chrome_io_data.h
[modify] https://crrev.com/9bf2667a46fd3ba3f7c4f4c69d2217ca68959a45/chrome/browser/profiles/profile_impl_io_data.cc
[modify] https://crrev.com/9bf2667a46fd3ba3f7c4f4c69d2217ca68959a45/components/cronet/android/cronet_data_reduction_proxy.cc
[modify] https://crrev.com/9bf2667a46fd3ba3f7c4f4c69d2217ca68959a45/components/data_reduction_proxy/core/browser/data_reduction_proxy_config_service_client.cc
[modify] https://crrev.com/9bf2667a46fd3ba3f7c4f4c69d2217ca68959a45/components/data_reduction_proxy/core/browser/data_reduction_proxy_config_service_client.h
[modify] https://crrev.com/9bf2667a46fd3ba3f7c4f4c69d2217ca68959a45/components/data_reduction_proxy/core/browser/data_reduction_proxy_config_service_client_unittest.cc
[modify] https://crrev.com/9bf2667a46fd3ba3f7c4f4c69d2217ca68959a45/components/data_reduction_proxy/core/browser/data_reduction_proxy_config_test_utils.cc
[modify] https://crrev.com/9bf2667a46fd3ba3f7c4f4c69d2217ca68959a45/components/data_reduction_proxy/core/browser/data_reduction_proxy_config_test_utils.h
[modify] https://crrev.com/9bf2667a46fd3ba3f7c4f4c69d2217ca68959a45/components/data_reduction_proxy/core/browser/data_reduction_proxy_config_unittest.cc
[modify] https://crrev.com/9bf2667a46fd3ba3f7c4f4c69d2217ca68959a45/components/data_reduction_proxy/core/browser/data_reduction_proxy_io_data.cc
[modify] https://crrev.com/9bf2667a46fd3ba3f7c4f4c69d2217ca68959a45/components/data_reduction_proxy/core/browser/data_reduction_proxy_io_data.h
[modify] https://crrev.com/9bf2667a46fd3ba3f7c4f4c69d2217ca68959a45/components/data_reduction_proxy/core/browser/data_reduction_proxy_io_data_unittest.cc
[modify] https://crrev.com/9bf2667a46fd3ba3f7c4f4c69d2217ca68959a45/components/data_reduction_proxy/core/browser/data_reduction_proxy_settings_unittest.cc
[modify] https://crrev.com/9bf2667a46fd3ba3f7c4f4c69d2217ca68959a45/components/data_reduction_proxy/core/common/data_reduction_proxy_params.cc
[modify] https://crrev.com/9bf2667a46fd3ba3f7c4f4c69d2217ca68959a45/components/data_reduction_proxy/core/common/data_reduction_proxy_params.h
[modify] https://crrev.com/9bf2667a46fd3ba3f7c4f4c69d2217ca68959a45/ios/chrome/browser/ios_chrome_io_thread.h
[modify] https://crrev.com/9bf2667a46fd3ba3f7c4f4c69d2217ca68959a45/ios/chrome/browser/ios_chrome_io_thread.mm
[modify] https://crrev.com/9bf2667a46fd3ba3f7c4f4c69d2217ca68959a45/net/http/http_network_session.cc
[modify] https://crrev.com/9bf2667a46fd3ba3f7c4f4c69d2217ca68959a45/net/http/http_network_session.h
[modify] https://crrev.com/9bf2667a46fd3ba3f7c4f4c69d2217ca68959a45/net/http/http_stream_factory_impl_job.cc
[modify] https://crrev.com/9bf2667a46fd3ba3f7c4f4c69d2217ca68959a45/net/http/http_stream_factory_impl_unittest.cc
[modify] https://crrev.com/9bf2667a46fd3ba3f7c4f4c69d2217ca68959a45/net/quic/quic_network_transaction_unittest.cc

Is this fixed?