Support mojo connections between unrelated peer processes.

mojo/edk/test/mojo_test_base.cc

Index: mojo/edk/test/mojo_test_base.cc
diff --git a/mojo/edk/test/mojo_test_base.cc b/mojo/edk/test/mojo_test_base.cc
index 5d77a1123d2fd153fccd428b9da5e5df669a2d9d..cf78caadc119dacd75558a2aef2d4d457a127cd1 100644
--- a/mojo/edk/test/mojo_test_base.cc
+++ b/mojo/edk/test/mojo_test_base.cc
@@ -44,14 +44,15 @@ MojoTestBase::~MojoTestBase() {}
 MojoTestBase::ClientController& MojoTestBase::StartClient(
     const std::string& client_name) {
   clients_.push_back(base::MakeUnique<ClientController>(
-      client_name, this, process_error_callback_));
+      client_name, this, process_error_callback_, launch_type_));
   return *clients_.back();
 }
 
 MojoTestBase::ClientController::ClientController(
     const std::string& client_name,
     MojoTestBase* test,
-    const ProcessErrorCallback& process_error_callback) {
+    const ProcessErrorCallback& process_error_callback,
+    LaunchType launch_type) {
 #if !defined(OS_IOS)
 #if defined(OS_MACOSX)
   // This lock needs to be held while launching the child because the Mach port
@@ -63,7 +64,7 @@ MojoTestBase::ClientController::ClientController(
   base::AutoLock lock(g_mach_broker->GetLock());
 #endif
   helper_.set_process_error_callback(process_error_callback);
-  pipe_ = helper_.StartChild(client_name);
+  pipe_ = helper_.StartChild(client_name, launch_type);
 #if defined(OS_MACOSX)
   g_mach_broker->AddPlaceholderForPid(helper_.test_child().Handle());
 #endif