Migrated test block 29 to Dart 2.0

tests/corelib_2/symbol_operator_test.dart

Index: tests/corelib_2/symbol_operator_test.dart
diff --git a/tests/corelib/symbol_operator_test.dart b/tests/corelib_2/symbol_operator_test.dart
similarity index 98%
rename from tests/corelib/symbol_operator_test.dart
rename to tests/corelib_2/symbol_operator_test.dart
index 1899f6fbce30862e9ea42dbcdfaa53b3fb925388..62a394be0e9e6ff11a9cd794ae9a0ce5c5204de4 100644
--- a/tests/corelib/symbol_operator_test.dart
+++ b/tests/corelib_2/symbol_operator_test.dart
@@ -4,7 +4,7 @@
 
 // Test of Symbol class for operators..
 
-var $ = new Symbolize();
+dynamic $ = new Symbolize();
 
 main() {
   testSymbol(#+, $ + $, "+");