Further refine mojo_example_apptests.

mojo/public/cpp/application/lib/application_impl.cc

Index: mojo/public/cpp/application/lib/application_impl.cc
diff --git a/mojo/public/cpp/application/lib/application_impl.cc b/mojo/public/cpp/application/lib/application_impl.cc
index 85218379b35d2c9d00070f7f4c839ece72b636f2..6a5560dd32b7cc0d10f5c1ab978159f1a6e68297 100644
--- a/mojo/public/cpp/application/lib/application_impl.cc
+++ b/mojo/public/cpp/application/lib/application_impl.cc
@@ -54,13 +54,6 @@ ApplicationImpl::~ApplicationImpl() {
   delete shell_watch_;
 }
 
-void ApplicationImpl::Initialize(Array<String> args) {
-  MOJO_CHECK(!initialized_);
-  initialized_ = true;
-  args_ = args.To<std::vector<std::string>>();
-  delegate_->Initialize(this);
-}
-
 ApplicationConnection* ApplicationImpl::ConnectToApplication(
     const String& application_url) {
   MOJO_CHECK(initialized_);
@@ -84,6 +77,17 @@ bool ApplicationImpl::WaitForInitialize() {
   return result;
 }
 
+ScopedMessagePipeHandle ApplicationImpl::UnbindShell() {
+  return shell_.PassMessagePipe();
+}
+
+void ApplicationImpl::Initialize(Array<String> args) {
+  MOJO_CHECK(!initialized_);
+  initialized_ = true;
+  args_ = args.To<std::vector<std::string>>();
+  delegate_->Initialize(this);
+}
+
 void ApplicationImpl::BindShell(ScopedMessagePipeHandle shell_handle) {
   shell_watch_ = new ShellPtrWatcher(this);
   shell_.Bind(shell_handle.Pass());