Support creating mojo peer connections from named pipes.

mojo/edk/system/multiprocess_message_pipe_unittest.cc

Index: mojo/edk/system/multiprocess_message_pipe_unittest.cc
diff --git a/mojo/edk/system/multiprocess_message_pipe_unittest.cc b/mojo/edk/system/multiprocess_message_pipe_unittest.cc
index 5b35a29177eade907ea6de6bdec7c5f3e988abc3..2879c61794476be7085c6c482fc502ed1854ccba 100644
--- a/mojo/edk/system/multiprocess_message_pipe_unittest.cc
+++ b/mojo/edk/system/multiprocess_message_pipe_unittest.cc
@@ -1419,10 +1419,13 @@ TEST_F(MultiprocessMessagePipeTest, NotifyBadMessage) {
   EXPECT_NE(std::string::npos, first_process_error.find(kFirstErrorMessage));
   EXPECT_NE(std::string::npos, second_process_error.find(kSecondErrorMessage));
 }
-INSTANTIATE_TEST_CASE_P(,
-                        MultiprocessMessagePipeTestWithPeerSupport,
-                        testing::Values(test::MojoTestBase::LaunchType::CHILD,
-                                        test::MojoTestBase::LaunchType::PEER));
+INSTANTIATE_TEST_CASE_P(
+    ,
+    MultiprocessMessagePipeTestWithPeerSupport,
+    testing::Values(test::MojoTestBase::LaunchType::CHILD,
+                    test::MojoTestBase::LaunchType::PEER,
+                    test::MojoTestBase::LaunchType::NAMED_CHILD,
+                    test::MojoTestBase::LaunchType::NAMED_PEER));
 }  // namespace
 }  // namespace edk
 }  // namespace mojo