bluetooth: Add option dict to ReadValue/WriteValue dbus call

device/bluetooth/dbus/bluetooth_gatt_descriptor_client.cc

Index: device/bluetooth/dbus/bluetooth_gatt_descriptor_client.cc
diff --git a/device/bluetooth/dbus/bluetooth_gatt_descriptor_client.cc b/device/bluetooth/dbus/bluetooth_gatt_descriptor_client.cc
index ddc314ccac683df0f82f517fa64d162c88227211..87590a070f9f6285ba9f48f342d6d0dc8038e71c 100644
--- a/device/bluetooth/dbus/bluetooth_gatt_descriptor_client.cc
+++ b/device/bluetooth/dbus/bluetooth_gatt_descriptor_client.cc
@@ -99,6 +99,21 @@ class BluetoothGattDescriptorClientImpl
         bluetooth_gatt_descriptor::kBluetoothGattDescriptorInterface,
         bluetooth_gatt_descriptor::kReadValue);
 
+    // Write offset option
+    dbus::MessageWriter writer(&method_call);
+    dbus::MessageWriter array_writer(NULL);
+    dbus::MessageWriter dict_entry_writer(NULL);
+    dbus::MessageWriter variant_writer(NULL);
+    writer.OpenArray("{sv}", &array_writer);
+    array_writer.OpenDictEntry(&dict_entry_writer);
+    dict_entry_writer.AppendString(
+        bluetooth_gatt_characteristic::kOptionOffset);
+    dict_entry_writer.OpenVariant("as", &variant_writer);
+    variant_writer.AppendInt16(0);
+    dict_entry_writer.CloseContainer(&variant_writer);
+    array_writer.CloseContainer(&dict_entry_writer);
+    writer.CloseContainer(&array_writer);
+
     object_proxy->CallMethodWithErrorCallback(
         &method_call, dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
         base::Bind(&BluetoothGattDescriptorClientImpl::OnValueSuccess,
@@ -125,6 +140,20 @@ class BluetoothGattDescriptorClientImpl
     dbus::MessageWriter writer(&method_call);
     writer.AppendArrayOfBytes(value.data(), value.size());
 
+    // Write offset option
+    dbus::MessageWriter array_writer(NULL);
+    dbus::MessageWriter dict_entry_writer(NULL);
+    dbus::MessageWriter variant_writer(NULL);
+    writer.OpenArray("{sv}", &array_writer);
+    array_writer.OpenDictEntry(&dict_entry_writer);
+    dict_entry_writer.AppendString(
+        bluetooth_gatt_characteristic::kOptionOffset);
+    dict_entry_writer.OpenVariant("as", &variant_writer);
+    variant_writer.AppendInt16(0);
+    dict_entry_writer.CloseContainer(&variant_writer);
+    array_writer.CloseContainer(&dict_entry_writer);
+    writer.CloseContainer(&array_writer);
+
     object_proxy->CallMethodWithErrorCallback(
         &method_call, dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
         base::Bind(&BluetoothGattDescriptorClientImpl::OnSuccess,