[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}

Committed: https://crrev.com/8ece3aa6845350c1971a3e824bf148f3e8de3253
Cr-Commit-Position: refs/heads/master@{#360875}

Review URL: https://codereview.chromium.org/1448583003

Cr-Commit-Position: refs/heads/master@{#361138}

1 files changed, 33 insertions, 0 deletions

diff --git a/components/cronet/url_request_context_config.cc b/components/cronet/url_request_context_config.cc
index 5cd24b8..ef94d0d 100644
--- a/components/cronet/url_request_context_config.cc
+++ b/components/cronet/url_request_context_config.cc
@@ -22,6 +22,12 @@ namespace {
 // TODO(xunjieli): Refactor constants in io_thread.cc.
 const char kQuicFieldTrialName[] = "QUIC";
 const char kQuicConnectionOptions[] = "connection_options";
+const char kQuicStoreServerConfigsInProperties[] =
+    "store_server_configs_in_properties";
+const char kQuicDelayTcpRace[] = "delay_tcp_race";
+const char kQuicMaxNumberOfLossyConnections[] =
+    "max_number_of_lossy_connections";
+const char kQuicPacketLossThreshold[] = "packet_loss_threshold";
 
 // Using a reference to scoped_ptr is unavoidable because of the semantics of
 // RegisterCustomField.
@@ -41,6 +47,7 @@ void ParseAndSetExperimentalOptions(
   if (experimental_options.empty())
     return;
 
+  DVLOG(1) << "Experimental Options:" << experimental_options;
   scoped_ptr<base::Value> options =
       base::JSONReader::Read(experimental_options);
 
@@ -67,6 +74,32 @@ void ParseAndSetExperimentalOptions(
       context_builder->set_quic_connection_options(
           net::QuicUtils::ParseQuicConnectionOptions(quic_connection_options));
     }
+
+    bool quic_store_server_configs_in_properties = false;
+    if (quic_args->GetBoolean(kQuicStoreServerConfigsInProperties,
+                              &quic_store_server_configs_in_properties)) {
+      context_builder->set_quic_store_server_configs_in_properties(
+          quic_store_server_configs_in_properties);
+    }
+
+    bool quic_delay_tcp_race = false;
+    if (quic_args->GetBoolean(kQuicDelayTcpRace, &quic_delay_tcp_race)) {
+      context_builder->set_quic_delay_tcp_race(quic_delay_tcp_race);
+    }
+
+    int quic_max_number_of_lossy_connections = 0;
+    if (quic_args->GetInteger(kQuicMaxNumberOfLossyConnections,
+                              &quic_max_number_of_lossy_connections)) {
+      context_builder->set_quic_max_number_of_lossy_connections(
+          quic_max_number_of_lossy_connections);
+    }
+
+    double quic_packet_loss_threshold = 0.0;
+    if (quic_args->GetDouble(kQuicPacketLossThreshold,
+                             &quic_packet_loss_threshold)) {
+      context_builder->set_quic_packet_loss_threshold(
+          quic_packet_loss_threshold);
+    }
   }
 }