Move FiftythreeBitOverflowError to VM-only patch file.

runtime/lib/errors_patch.dart

Index: runtime/lib/errors_patch.dart
diff --git a/runtime/lib/errors_patch.dart b/runtime/lib/errors_patch.dart
index daf8f01fabaa3aaba307d7d74310b9ade933225b..9804f519f82267b9b408ee3ba712df8ba6578515 100644
--- a/runtime/lib/errors_patch.dart
+++ b/runtime/lib/errors_patch.dart
@@ -169,3 +169,10 @@ patch class NoSuchMethodError {
     return msg_buf.toString();
   }
 }
+
+class FiftyThreeBitOverflowError implements Error {
+  final Object value;
+
+  const FiftyThreeBitOverflowError(this.value);
+  String toString() => "53-bit Overflow: $value";
+}