Remove TODOs that are out of date.

device/bluetooth/bluetooth_remote_gatt_characteristic_mac.mm

Index: device/bluetooth/bluetooth_remote_gatt_characteristic_mac.mm
diff --git a/device/bluetooth/bluetooth_remote_gatt_characteristic_mac.mm b/device/bluetooth/bluetooth_remote_gatt_characteristic_mac.mm
index 4e825a3c57b51b94d39fbc493e5a9a1b77adab54..ffa4ad601678c1ef63e5d64d42da5f7acea87141 100644
--- a/device/bluetooth/bluetooth_remote_gatt_characteristic_mac.mm
+++ b/device/bluetooth/bluetooth_remote_gatt_characteristic_mac.mm
@@ -198,7 +198,7 @@ void BluetoothRemoteGattCharacteristicMac::ReadRemoteCharacteristic(
 }
 
 void BluetoothRemoteGattCharacteristicMac::WriteRemoteCharacteristic(
-    const std::vector<uint8_t>& new_value,
+    const std::vector<uint8_t>& value,
     const base::Closure& callback,
     const ErrorCallback& error_callback) {
   if (!IsWritable()) {
@@ -219,7 +219,7 @@ void BluetoothRemoteGattCharacteristicMac::WriteRemoteCharacteristic(
   write_characteristic_value_callbacks_ =
       std::make_pair(callback, error_callback);
   base::scoped_nsobject<NSData> nsdata_value(
-      [[NSData alloc] initWithBytes:new_value.data() length:new_value.size()]);
+      [[NSData alloc] initWithBytes:value.data() length:value.size()]);
   CBCharacteristicWriteType write_type = GetCBWriteType();
   [gatt_service_->GetCBPeripheral() writeValue:nsdata_value
                              forCharacteristic:cb_characteristic_