Mojo: Use InterfaceFactory<Interface> for service registration

mojo/public/cpp/bindings/tests/handle_passing_unittest.cc

Index: mojo/public/cpp/bindings/tests/handle_passing_unittest.cc
diff --git a/mojo/public/cpp/bindings/tests/handle_passing_unittest.cc b/mojo/public/cpp/bindings/tests/handle_passing_unittest.cc
index 99eddf83410615547d2b3be19a7f8437fb4cf792..e2f51348422dcfce9679034abbddf482d1173e58 100644
--- a/mojo/public/cpp/bindings/tests/handle_passing_unittest.cc
+++ b/mojo/public/cpp/bindings/tests/handle_passing_unittest.cc
@@ -28,10 +28,6 @@ class StringRecorder {
 
 class SampleNamedObjectImpl : public InterfaceImpl<sample::NamedObject> {
  public:
-  virtual void OnConnectionError() MOJO_OVERRIDE {
-    delete this;
-  }
-
   virtual void SetName(const mojo::String& name) MOJO_OVERRIDE {
     name_ = name;
   }
@@ -47,10 +43,6 @@ class SampleNamedObjectImpl : public InterfaceImpl<sample::NamedObject> {
 
 class SampleFactoryImpl : public InterfaceImpl<sample::Factory> {
  public:
-  virtual void OnConnectionError() MOJO_OVERRIDE {
-    delete this;
-  }
-
   virtual void DoStuff(sample::RequestPtr request,
                        ScopedMessagePipeHandle pipe) MOJO_OVERRIDE {
     std::string text1;