Add Spdy4Experiment group.

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 e383dae55360bd631aaf01784b3bb73441cfeef1..14a4694d11433def1205aa62845a96613e89a5f4 100644
--- a/chrome/browser/io_thread_unittest.cc
+++ b/chrome/browser/io_thread_unittest.cc
@@ -100,6 +100,19 @@ TEST_F(IOThreadTest, SpdyFieldTrialSpdy4Enabled) {
   EXPECT_TRUE(use_alternate_protocols);
 }
 
+TEST_F(IOThreadTest, SpdyFieldTrialSpdy4Experiment) {
+  bool use_alternate_protocols = false;
+  IOThreadPeer::ConfigureSpdyFromTrial("Spdy4Experiment", &globals_);
+  EXPECT_THAT(globals_.next_protos,
+              ElementsAre(net::kProtoHTTP11,
+                          net::kProtoQUIC1SPDY3,
+                          net::kProtoSPDY3,
+                          net::kProtoSPDY31,
+                          net::kProtoSPDY4));
+  globals_.use_alternate_protocols.CopyToIfSet(&use_alternate_protocols);
+  EXPECT_TRUE(use_alternate_protocols);
+}
+
 TEST_F(IOThreadTest, SpdyFieldTrialSpdy4Control) {
   bool use_alternate_protocols = false;
   IOThreadPeer::ConfigureSpdyFromTrial("Spdy4Control", &globals_);