Bruno Leroux d4326f7b08 [Linux] Allow BasicMessageChannel sending and responding to null message (flutter/engine#42808) ...

## Description

This PR changes how a null message is handled by the Linux engine for a basic message channel.

**Before**:

- when receiving a null message a warning was emitted.
- `fl_binary_messenger_send_response` was called but failed and the application exited.

```
** (bug:9866): WARNING **: 23:13:42.109: Failed to decode message: Unexpected end of data

** (bug:9866): CRITICAL **: 23:13:42.109: gboolean send_response(FlBinaryMessenger *, FlBinaryMessengerResponseHandle *, GBytes *, GError **): assertion 'response_handle->response_handle != nullptr' failed
```

**After**:

- Receiving a null message is handled as expected from the framework side documentation:

9287e81d52/packages/flutter/lib/src/services/platform_channel.dart (L149-L150)

## Related Issue

Fixes https://github.com/flutter/flutter/issues/128704

## Tests

Adds 2 tests.

2023-06-15 13:04:00 +00:00

engine/src/flutter

[Linux] Allow BasicMessageChannel sending and responding to null message (flutter/engine#42808)

2023-06-15 13:04:00 +00:00

DEPS

Roll Skia from 12375fb6f3c8 to c0c74b433117 (1 revision) (flutter/engine#42876)

2023-06-15 12:14:09 +00:00

Description

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androidapp-frameworkcross-platformdartdart-platformdesktopflutterflutter-packagefuchsiaioslinux-desktopmacosmaterial-designmobilemobile-developmentskiawebweb-frameworkwindows

2.5 GiB

Languages

Dart 75%

C++ 16.5%

Objective-C++ 2.9%

Java 2.8%

Objective-C 0.7%

Other 1.9%