chrome: dbus: support asynchronous method replies

dbus/test_service.cc

Index: dbus/test_service.cc
diff --git a/dbus/test_service.cc b/dbus/test_service.cc
index b0207b0e7e9afb14ae4cd1033766855f12b3cdff..b5b6e2906f4022101901663c72369fce9513d421 100644
--- a/dbus/test_service.cc
+++ b/dbus/test_service.cc
@@ -163,25 +163,30 @@ void TestService::Run(MessageLoop* message_loop) {
   message_loop->Run();
 }
 
-Response* TestService::Echo(MethodCall* method_call) {
+void TestService::Echo(MethodCall* method_call,
+    dbus::ExportedObject::SendResponseCallback send_response_cb) {
   MessageReader reader(method_call);
   std::string text_message;
-  if (!reader.PopString(&text_message))
-    return NULL;
+  if (!reader.PopString(&text_message)) {
+    send_response_cb.Run(NULL);
+    return;
+  }
 
   Response* response = Response::FromMethodCall(method_call);
   MessageWriter writer(response);
   writer.AppendString(text_message);
-  return response;
+  send_response_cb.Run(response);
 }
 
-Response* TestService::SlowEcho(MethodCall* method_call) {
+void TestService::SlowEcho(MethodCall* method_call,
+    dbus::ExportedObject::SendResponseCallback send_response_cb) {
   base::PlatformThread::Sleep(TestTimeouts::tiny_timeout_ms());
-  return Echo(method_call);
+  Echo(method_call, send_response_cb);
 }
 
-Response* TestService::BrokenMethod(MethodCall* method_call) {
-  return NULL;
+void TestService::BrokenMethod(MethodCall* method_call,
+    dbus::ExportedObject::SendResponseCallback send_response_cb) {
+  send_response_cb.Run(NULL);
 }
 
 }  // namespace dbus