Changing SpawnChild to return a struct.

mojo/edk/embedder/embedder_unittest.cc

Index: mojo/edk/embedder/embedder_unittest.cc
diff --git a/mojo/edk/embedder/embedder_unittest.cc b/mojo/edk/embedder/embedder_unittest.cc
index 2eb6bebb9deb53ca539dfb5c9dab69a6e5e5f9a8..4c085d929d3e1af7541874aad311371f21ae2ebd 100644
--- a/mojo/edk/embedder/embedder_unittest.cc
+++ b/mojo/edk/embedder/embedder_unittest.cc
@@ -206,11 +206,12 @@ TEST_F(EmbedderTest, PipeSetup) {
 
 TEST_F(EmbedderTest, PipeSetup_LaunchDeath) {
   PlatformChannelPair pair;
+  ConnectionParam connection_param(pair.PassServerHandle());
 
   PendingProcessConnection process;
   std::string pipe_token;
   ScopedMessagePipeHandle parent_mp = process.CreateMessagePipe(&pipe_token);
-  process.Connect(base::GetCurrentProcessHandle(), pair.PassServerHandle());
+  process.Connect(base::GetCurrentProcessHandle(), std::move(connection_param));
 
   // Close the remote end, simulating child death before the child connects to
   // the reserved port.