Add-experimental-launch-flag.patch

diff --git a/packages/flutter_tools/lib/src/web/chrome.dart b/packages/flutter_tools/lib/src/web/chrome.dart
index 43a1e2f60e..f75facb8e5 100644
--- a/packages/flutter_tools/lib/src/web/chrome.dart
+++ b/packages/flutter_tools/lib/src/web/chrome.dart
@@ -194,6 +194,22 @@ class ChromiumLauncher {
     }
 
     final int port = debugPort ?? await _operatingSystemUtils.findFreePort();
+
+    // Enable experimental web platform features for the new browser instance.
+    final String json = jsonEncode(<String, dynamic>{
+      'browser': <String, dynamic>{
+        'enabled_labs_experiments': <String>[
+          'enable-experimental-web-platform-features',
+          'enable-web-bluetooth-new-permissions-backend@1',
+          'enable-web-bluetooth@1',
+        ]
+      }
+    });
+
+    final File file = _fileSystem.file('${userDataDir.path}/Local State');
+    await file.create(recursive: true);
+    await file.writeAsString(json);
+
     final List<String> args = <String>[
       chromeExecutable,
       // Using a tmp directory ensures that a new instance of chrome launches