Add test for canonical host alternative service.

net/http/http_server_properties_impl_unittest.cc

Index: net/http/http_server_properties_impl_unittest.cc
diff --git a/net/http/http_server_properties_impl_unittest.cc b/net/http/http_server_properties_impl_unittest.cc
index d4fc212f65bd6b6a3554b6fa5ca94a7a6047bc37..a9463b815f6df1b4e57b7b1880e9bd3457280d27 100644
--- a/net/http/http_server_properties_impl_unittest.cc
+++ b/net/http/http_server_properties_impl_unittest.cc
@@ -445,6 +445,23 @@ TEST_F(AlternateProtocolServerPropertiesTest, Canonical) {
             impl_.GetCanonicalSuffix(canonical_port_pair.host()));
 }
 
+TEST_F(AlternateProtocolServerPropertiesTest, CanonicalDefaultHost) {
+  HostPortPair test_host_port_pair("foo.c.youtube.com", 80);
+  EXPECT_FALSE(HasAlternativeService(test_host_port_pair));
+
+  HostPortPair canonical_port_pair("bar.c.youtube.com", 80);
+  EXPECT_FALSE(HasAlternativeService(canonical_port_pair));
+
+  AlternativeService canonical_altsvc(QUIC, "", 1234);
+  impl_.SetAlternativeService(canonical_port_pair, canonical_altsvc, 1.0);
+  ASSERT_TRUE(HasAlternativeService(test_host_port_pair));
+  const AlternativeService alternative_service =
+      impl_.GetAlternativeService(test_host_port_pair);
+  EXPECT_EQ(canonical_altsvc.protocol, alternative_service.protocol);
+  EXPECT_EQ(test_host_port_pair.host(), alternative_service.host);

[Ryan Hamilton, 2015/03/23 20:48:07]

This is great! Nice.

That being said, I'm astounded that it works! :> Did you explicitly implement
this behavior in an earlier CL?

+  EXPECT_EQ(canonical_altsvc.port, alternative_service.port);
+}
+
 TEST_F(AlternateProtocolServerPropertiesTest, CanonicalBelowThreshold) {
   impl_.SetAlternateProtocolProbabilityThreshold(0.02);