Mojo: Internalize ServiceConnector<>

mojo/public/cpp/bindings/interface_impl.h

Index: mojo/public/cpp/bindings/interface_impl.h
diff --git a/mojo/public/cpp/bindings/interface_impl.h b/mojo/public/cpp/bindings/interface_impl.h
index a9d0947757d728bb773efe0538952ec1556a7151..15dc9807adbf3548917023d6717dec3afef0910e 100644
--- a/mojo/public/cpp/bindings/interface_impl.h
+++ b/mojo/public/cpp/bindings/interface_impl.h
@@ -13,18 +13,17 @@ namespace mojo {
 // InterfaceImpl<..> is designed to be the base class of an interface
 // implementation. It may be bound to a pipe or a proxy, see BindToPipe and
 // BindToProxy.
-//
-// NOTE: A base class of WithErrorHandler<Interface> is used to avoid multiple
-// inheritance. This base class inserts the signature of ErrorHandler into the
-// inheritance chain.
 template <typename Interface>
-class InterfaceImpl : public WithErrorHandler<Interface> {
+class InterfaceImpl : public internal::InterfaceImplBase<Interface> {
  public:
   typedef typename Interface::Client Client;
 
   InterfaceImpl() : internal_state_(this) {}
   virtual ~InterfaceImpl() {}
 
+  // Subclasses can override this to handle post connection initialization.
+  virtual void OnConnectionEstablished() {}
+
   // Subclasses must handle connection errors.
   virtual void OnConnectionError() = 0;