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

chrome/browser/io_thread_unittest.cc

Index: chrome/browser/io_thread_unittest.cc
diff --git a/chrome/browser/io_thread_unittest.cc b/chrome/browser/io_thread_unittest.cc
index 43c46692d17c526258feab86726a320ef8a9f87b..ec81bfe2e0bbf2ff9bb48a9da2c36860beb0a251 100644
--- a/chrome/browser/io_thread_unittest.cc
+++ b/chrome/browser/io_thread_unittest.cc
@@ -114,6 +114,7 @@ TEST_F(IOThreadTest, DisableQuicByDefault) {
   net::HttpNetworkSession::Params params;
   InitializeNetworkSessionParams(&params);
   EXPECT_FALSE(params.enable_quic);
+  EXPECT_FALSE(params.enable_quic_for_proxies);
 }
 
 TEST_F(IOThreadTest, EnableQuicFromFieldTrialGroup) {
@@ -124,6 +125,7 @@ TEST_F(IOThreadTest, EnableQuicFromFieldTrialGroup) {
   net::HttpNetworkSession::Params params;
   InitializeNetworkSessionParams(&params);
   EXPECT_TRUE(params.enable_quic);
+  EXPECT_TRUE(params.enable_quic_for_proxies);
   EXPECT_EQ(1350u, params.quic_max_packet_length);
   EXPECT_EQ(1.0, params.alternate_protocol_probability_threshold);
   EXPECT_EQ(default_params.quic_supported_versions,
@@ -143,6 +145,7 @@ TEST_F(IOThreadTest, EnableQuicFromCommandLine) {
   net::HttpNetworkSession::Params params;
   InitializeNetworkSessionParams(&params);
   EXPECT_TRUE(params.enable_quic);
+  EXPECT_TRUE(params.enable_quic_for_proxies);
 }
 
 TEST_F(IOThreadTest, EnablePacingFromCommandLine) {