Hide unresolved DartUri log messages (#102338)

Author: elliette

packages/flutter_tools/lib/src/isolated/devfs_web.dart

@@ -1009,6 +1009,16 @@ void _log(logging.LogRecord event) {
   if (event.level >= logging.Level.SEVERE) {
     globals.printError('${event.loggerName}: ${event.message}$error', stackTrace: event.stackTrace);
   } else if (event.level == logging.Level.WARNING) {
+    // TODO(elliette): Remove the following message suppressions after DWDS is
+    // >13.1.0, https://github.com/flutter/flutter/issues/101639
+    const String dartUri = 'DartUri';
+    if (event.loggerName == dartUri) {
+      const String webSqlWarning = 'Unresolved uri: dart:web_sql';
+      const String uiWarning = 'Unresolved uri: dart:ui';
+      if (event.message == webSqlWarning || event.message == uiWarning) {
+        return;
+      }
+    }
     globals.printWarning('${event.loggerName}: ${event.message}$error');
   } else  {
     globals.printTrace('${event.loggerName}: ${event.message}$error');

packages/flutter_tools/test/web.shard/output_web_test.dart

@@ -78,4 +78,18 @@ void main() {
     await sendEvent(<String, Object>{'type': 'DevtoolsEvent'});
     await warning;
   }, skip: true); // Skipping for 'https://github.com/dart-lang/webdev/issues/1562'
+
+  testWithoutContext(
+      'flutter run output skips DartUri warning messages from dwds', () async {
+    bool containsDartUriWarning = false;
+    flutter.stderr.listen((String msg) {
+      if (msg.contains('DartUri')) {
+        containsDartUriWarning = true;
+      }
+    });
+    await start();
+    await flutter.stop();
+    expect(containsDartUriWarning, isFalse);
+    // TODO(elliette): Enable for DWDS >13.1.0, https://github.com/flutter/flutter/issues/101639
+  }, skip: true); // [intended] enable for DWDS >13.1.0
 }