Screen Sharing - Using Broadcast Extension to share any app doesn't work

[ipainchaud]

There are two different ways to share the screen on iOS described here:

1. In-App
2. Broadcast Extension

I followed all the instructions described here without success. It doesn't crash, doesn't give any error message, just doesn't seem to return the MediaStream containing the video track to transmit.

When I use the In-App screen sharing, no issue.

To Reproduce
Follow steps described here.

Expected behavior
The Screen should be shared.

• Flutter version:
  $ flutter doctor -v
  [✓] Flutter (Channel stable, 3.7.12, on macOS 13.3.1 22E772610a darwin-x64, locale en-US)
  • Flutter version 3.7.12 on channel stable at /usr/local/Caskroom/flutter/3.0.2/flutter
  • Upstream repository https://github.com/flutter/flutter.git
  • Framework revision 4d9e56e694 (3 weeks ago), 2023-04-17 21:47:46 -0400
  • Engine revision 1a65d409c7
  • Dart version 2.19.6
  • DevTools version 2.20.1

[✓] Android toolchain - develop for Android devices (Android SDK version 33.0.0)
• Android SDK at /Users/israelpainchaud/Library/Android/sdk
• Platform android-33, build-tools 33.0.0
• Java binary at: /Applications/Android Studio.app/Contents/jbr/Contents/Home/bin/java
• Java version OpenJDK Runtime Environment (build 17.0.6+0-17.0.6b802.4-9586694)
• All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 14.3)
• Xcode at /Applications/Xcode.app/Contents/Developer
• Build 14E222b
• CocoaPods version 1.12.1

[✓] Chrome - develop for the web
• Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 2022.2)
• Android Studio at /Applications/Android Studio.app/Contents
• Flutter plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/9212-flutter
• Dart plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/6351-dart
• Java version OpenJDK Runtime Environment (build 17.0.6+0-17.0.6b802.4-9586694)

[✓] IntelliJ IDEA Community Edition (version 2022.2.1)
• IntelliJ at /Applications/IntelliJ IDEA CE.app
• Flutter plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/9212-flutter
• Dart plugin version 222.4560

[✓] Connected device (3 available)
• iPhone 14 (mobile) • FEFDB00B-9DAA-4FA0-87FA-5BAFBB333441 • ios • com.apple.CoreSimulator.SimRuntime.iOS-16-4 (simulator)
• macOS (desktop) • macos • darwin-x64 • macOS 13.3.1 22E772610a darwin-x64
• Chrome (web) • chrome • web-javascript • Google Chrome 113.0.5672.92

[✓] HTTP Host Availability
• All required HTTP hosts are available

• No issues found!

• Plugin version: 0.9.26
• OS: iOS
• OS version: 16.4.1

[cloudwebrtc]

merged #1347