Enable QUIC for proxies based on Finch config and command line switch.

chrome/browser/io_thread.cc

Index: chrome/browser/io_thread.cc
diff --git a/chrome/browser/io_thread.cc b/chrome/browser/io_thread.cc
index 9ef53eeac4556f6865d2b244199b8d94a453161e..ad5d7ad8c140cf70957f55e440b55495787d6ba3 100644
--- a/chrome/browser/io_thread.cc
+++ b/chrome/browser/io_thread.cc
@@ -1030,6 +1030,7 @@ void IOThread::InitializeNetworkSessionParamsFromGlobals(
       &params->alternate_protocol_probability_threshold);
 
   globals.enable_quic.CopyToIfSet(&params->enable_quic);
+  globals.enable_quic_proxy.CopyToIfSet(&params->enable_quic_proxy);
   globals.quic_always_require_handshake_confirmation.CopyToIfSet(
       &params->quic_always_require_handshake_confirmation);
   globals.quic_disable_connection_pooling.CopyToIfSet(
@@ -1150,6 +1151,9 @@ void IOThread::ConfigureQuicGlobals(
     IOThread::Globals* globals) {
   bool enable_quic = ShouldEnableQuic(command_line, quic_trial_group);
   globals->enable_quic.set(enable_quic);
+  bool enable_quic_for_proxies =
+      ShouldEnableQuicForProxies(command_line, quic_trial_group);
+  globals->enable_quic_proxy.set(enable_quic_for_proxies);
   if (enable_quic) {
     globals->quic_always_require_handshake_confirmation.set(
         ShouldQuicAlwaysRequireHandshakeConfirmation(quic_trial_params));
@@ -1229,6 +1233,13 @@ bool IOThread::ShouldEnableQuic(const base::CommandLine& command_line,
       quic_trial_group.starts_with(kQuicFieldTrialHttpsEnabledGroupName);
 }
 
+bool IOThread::ShouldEnableQuicForProxies(const base::CommandLine& command_line,
+                                          base::StringPiece quic_trial_group) {
+  return  ShouldEnableQuic(command_line, quic_trial_group) ||
+      base::FieldTrialList::FindFullName(
+          "DataReductionProxyUseQUICAsPrimaryOrigin") == "Enabled";

[bengr, 2015/02/07 01:48:48]

How about DataReductionProxyUseQUIC?

And why does this not follow the same pattern as ShouldEnableQuic? At the very
least, I don't think IOThread should know the name of our field trial.

[Ryan Hamilton, 2015/02/08 16:56:35]

s/QUIC/Quic/ when used like this. Do you already have an existing data
compression proxy field trial study, or is this the first?

[Ryan Hamilton, 2015/02/08 16:56:36]

I think you need to check the --disable-quic flag?

[tbansal1, 2015/02/10 19:46:04]

Done.

[tbansal1, 2015/02/10 19:46:04]

Done.

[tbansal1, 2015/02/10 19:46:04]

Done.

[tbansal1, 2015/02/10 19:46:04]

Done.

[tbansal1, 2015/02/10 22:45:41]

Done.

[tbansal1, 2015/02/10 22:45:41]

This is the first.

+}
+
 bool IOThread::ShouldEnableQuicPortSelection(
     const base::CommandLine& command_line) {
   if (command_line.HasSwitch(switches::kDisableQuicPortSelection))