Update Dart bindings for _mojo_for_test_only package.

mojo/dart/packages/_mojo_for_test_only/lib/imported/sample_import.mojom.dart

Index: mojo/dart/packages/_mojo_for_test_only/lib/imported/sample_import.mojom.dart
diff --git a/mojo/dart/packages/_mojo_for_test_only/lib/imported/sample_import.mojom.dart b/mojo/dart/packages/_mojo_for_test_only/lib/imported/sample_import.mojom.dart
index a308282bc739bfc35909a495d66bc3debf8db0bd..7b4fd3065e68bd858574e23088f5052b12dca2ca 100644
--- a/mojo/dart/packages/_mojo_for_test_only/lib/imported/sample_import.mojom.dart
+++ b/mojo/dart/packages/_mojo_for_test_only/lib/imported/sample_import.mojom.dart
@@ -542,7 +542,7 @@ mojom_types.RuntimeTypeInfo  _initRuntimeTypeInfo() {
   // serializedRuntimeTypeInfo contains the bytes of the Mojo serialization of
   // a mojom_types.RuntimeTypeInfo struct describing the Mojom types in this
   // file. The string contains the base64 encoding of the gzip-compressed bytes.
-  var serializedRuntimeTypeInfo = "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";
+  var serializedRuntimeTypeInfo = "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";
 
   // Deserialize RuntimeTypeInfo
   var bytes = BASE64.decode(serializedRuntimeTypeInfo);