Move AcceptWithResponder() out of the MessageReceiver interface.

mojo/public/cpp/bindings/lib/router.cc

Index: mojo/public/cpp/bindings/lib/router.cc
diff --git a/mojo/public/cpp/bindings/lib/router.cc b/mojo/public/cpp/bindings/lib/router.cc
index bb578d9beb47d0a5bf2f7870beb74eabf072256e..7d0d868a044f536728537f701e254b161ace4b0a 100644
--- a/mojo/public/cpp/bindings/lib/router.cc
+++ b/mojo/public/cpp/bindings/lib/router.cc
@@ -30,12 +30,6 @@ class ResponderThunk : public MessageReceiver {
     return result;
   }
 
-  virtual bool AcceptWithResponder(Message* message,
-                                   MessageReceiver* responder) MOJO_OVERRIDE {
-    assert(false);  // not reached!
-    return false;
-  }
-
  private:
   SharedData<Router*> router_;
 };
@@ -53,13 +47,6 @@ bool Router::HandleIncomingMessageThunk::Accept(Message* message) {
   return router_->HandleIncomingMessage(message);
 }
 
-bool Router::HandleIncomingMessageThunk::AcceptWithResponder(
-    Message* message,
-    MessageReceiver* responder) {
-  assert(false);  // not reached!
-  return false;
-}
-
 // ----------------------------------------------------------------------------
 
 Router::Router(ScopedMessagePipeHandle message_pipe,