bluetooth: Add option dict to ReadValue/WriteValue dbus call

device/bluetooth/dbus/bluetooth_gatt_characteristic_client.cc

Index: device/bluetooth/dbus/bluetooth_gatt_characteristic_client.cc
diff --git a/device/bluetooth/dbus/bluetooth_gatt_characteristic_client.cc b/device/bluetooth/dbus/bluetooth_gatt_characteristic_client.cc
index 0002ddbb03d0267a135a64cc41eedb81fe24e9d9..1ce7c35bc0f70af6978edb9e1e3148ebf5850835 100644
--- a/device/bluetooth/dbus/bluetooth_gatt_characteristic_client.cc
+++ b/device/bluetooth/dbus/bluetooth_gatt_characteristic_client.cc
@@ -10,8 +10,10 @@
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "base/observer_list.h"
+#include "base/values.h"
 #include "dbus/bus.h"
 #include "dbus/object_manager.h"
+#include "dbus/values_util.h"
 #include "third_party/cros_system_api/dbus/service_constants.h"
 
 namespace bluez {
@@ -95,6 +97,11 @@ class BluetoothGattCharacteristicClientImpl
         bluetooth_gatt_characteristic::kBluetoothGattCharacteristicInterface,
         bluetooth_gatt_characteristic::kReadValue);
 
+    // Append empty option dict
+    dbus::MessageWriter writer(&method_call);
+    base::DictionaryValue dict;
+    dbus::AppendValueData(&writer, dict);
+
     object_proxy->CallMethodWithErrorCallback(
         &method_call, dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
         base::Bind(&BluetoothGattCharacteristicClientImpl::OnValueSuccess,
@@ -121,6 +128,10 @@ class BluetoothGattCharacteristicClientImpl
     dbus::MessageWriter writer(&method_call);
     writer.AppendArrayOfBytes(value.data(), value.size());
 
+    // Append empty option dict
+    base::DictionaryValue dict;
+    dbus::AppendValueData(&writer, dict);
+
     object_proxy->CallMethodWithErrorCallback(
         &method_call, dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
         base::Bind(&BluetoothGattCharacteristicClientImpl::OnSuccess,