Add mojo::edk::ClosePeerConnection.

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 cf78caadc119dacd75558a2aef2d4d457a127cd1..f1032d7e3f5fe0ef45957dba5c8949cd1cdf5602 100644
--- a/mojo/edk/test/mojo_test_base.cc
+++ b/mojo/edk/test/mojo_test_base.cc
@@ -76,6 +76,12 @@ MojoTestBase::ClientController::~ClientController() {
       << "Test clients should be waited on explicitly with WaitForShutdown().";
 }
 
+void MojoTestBase::ClientController::ClosePeerConnection() {
+#if !defined(OS_IOS)
+  helper_.ClosePeerConnection();
+#endif
+}
+
 int MojoTestBase::ClientController::WaitForShutdown() {
   was_shutdown_ = true;
 #if !defined(OS_IOS)