Add flag to enable alternative services.

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 2d6a6c607fbe08a9ef70ffbe845c512a097b75bc..bc730062a40578a411999d6b5e370f6c40fde5bc 100644
--- a/chrome/browser/io_thread_unittest.cc
+++ b/chrome/browser/io_thread_unittest.cc
@@ -200,6 +200,27 @@ TEST_F(IOThreadTest, EnableQuicFromCommandLine) {
   EXPECT_FALSE(IOThread::ShouldEnableQuicForDataReductionProxy());
 }
 
+TEST_F(IOThreadTest, EnableAlternativeServicesFromCommandLineWithQuicDisabled) {
+  command_line_.AppendSwitch("enable-alternative-services");
+
+  ConfigureQuicGlobals();
+  net::HttpNetworkSession::Params params;
+  InitializeNetworkSessionParams(&params);
+  EXPECT_FALSE(params.enable_quic);
+  EXPECT_TRUE(params.use_alternative_services);
+}
+
+TEST_F(IOThreadTest, EnableAlternativeServicesFromCommandLineWithQuicEnabled) {
+  command_line_.AppendSwitch("enable-quic");
+  command_line_.AppendSwitch("enable-alternative-services");
+
+  ConfigureQuicGlobals();
+  net::HttpNetworkSession::Params params;
+  InitializeNetworkSessionParams(&params);
+  EXPECT_TRUE(params.enable_quic);
+  EXPECT_TRUE(params.use_alternative_services);
+}
+
 TEST_F(IOThreadTest, EnableInsecureQuicFromFieldTrialParams) {
   field_trial_group_ = "Enabled";
   field_trial_params_["enable_insecure_quic"] = "true";