test rename overhaul: step 7 - corelib tests

tests/corelib/string_base_vm_test.dart

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 // Dart test program for testing class 'StringBase' (currently VM specific).
 
 #library("StringBaseTest.dart");
 #import("dart:coreimpl");
 
 
 class StringBaseTest {
@@ skipping 74 matching lines @@
     testSubstringMatches();
     testInterpolation();
     testCreation();
     testSubstring();
   }
 }
 
 main() {
   StringBaseTest.testMain();
 }