Add a mojo::RunApplication() for running implementations of ApplicationImplBase.

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

Index: mojo/public/cpp/application/lib/application_impl_base.cc
diff --git a/mojo/public/cpp/application/lib/application_impl_base.cc b/mojo/public/cpp/application/lib/application_impl_base.cc
index 544c262328a499e86e058d4e4cfbab17b943ed91..085e8c86c4241fe5baa4d2280f60bf5bd96fec41 100644
--- a/mojo/public/cpp/application/lib/application_impl_base.cc
+++ b/mojo/public/cpp/application/lib/application_impl_base.cc
@@ -13,8 +13,6 @@
 
 namespace mojo {
 
-ApplicationImplBase::ApplicationImplBase() : application_binding_(this) {}
-
 ApplicationImplBase::~ApplicationImplBase() {}
 
 void ApplicationImplBase::Bind(
@@ -26,6 +24,17 @@ bool ApplicationImplBase::HasArg(const std::string& arg) const {
   return std::find(args_.begin(), args_.end(), arg) != args_.end();
 }
 
+void ApplicationImplBase::OnInitialize() {}
+
+bool ApplicationImplBase::OnAcceptConnection(
+    ServiceProviderImpl* service_provider_impl) {
+  return false;
+}
+
+void ApplicationImplBase::OnQuit() {}
+
+ApplicationImplBase::ApplicationImplBase() : application_binding_(this) {}
+
 void ApplicationImplBase::Initialize(InterfaceHandle<Shell> shell,
                                      Array<String> args,
                                      const mojo::String& url) {