bluetooth: Update BluetoothGATTCharacteristic.value on writeValue

content/renderer/bluetooth/bluetooth_dispatcher.cc

Index: content/renderer/bluetooth/bluetooth_dispatcher.cc
diff --git a/content/renderer/bluetooth/bluetooth_dispatcher.cc b/content/renderer/bluetooth/bluetooth_dispatcher.cc
index 82bad22cb0993b98088c0f0bcf98e5f4d63f24cb..1e38a4099eb9d81458fc1139f8bfd04f4cfbf1b6 100644
--- a/content/renderer/bluetooth/bluetooth_dispatcher.cc
+++ b/content/renderer/bluetooth/bluetooth_dispatcher.cc
@@ -663,10 +663,13 @@ void BluetoothDispatcher::OnReadValueError(int thread_id,
   pending_read_value_requests_.Remove(request_id);
 }
 
-void BluetoothDispatcher::OnWriteValueSuccess(int thread_id, int request_id) {
+void BluetoothDispatcher::OnWriteValueSuccess(
+    int thread_id,
+    int request_id,
+    const std::vector<uint8_t>& value) {

[ortuno, 2016/01/20 16:34:40]

I don't think you need to send back the value. You can add a
CharacteristicWriteValueRequest struct and save the value there; we do something
similar for getPrimaryService and getCharacteristic.

   DCHECK(pending_write_value_requests_.Lookup(request_id)) << request_id;
 
-  pending_write_value_requests_.Lookup(request_id)->onSuccess();
+  pending_write_value_requests_.Lookup(request_id)->onSuccess(value);
 
   pending_write_value_requests_.Remove(request_id);
 }