Fix warnings_checker.dart handling of multitests

tests/standalone/black_listed_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 checking that static/instance field shadowing do not conflict.
 
 // Test that certain interfaces/classes are blacklisted from being
 // implemented or extended (VM corelib only).
 
 library BlackListedTest;
 
-class MyBool extends Bool {} // /// 01: compile-time error
+class MyBool extends Bool {} // //# 01: compile-time error
 
-class MyDouble extends Double {} // /// 02: compile-time error
+class MyDouble extends Double {} // //# 02: compile-time error
 
-class MyObjectArray extends ObjectArray {} // /// 03: compile-time error
+class MyObjectArray extends ObjectArray {} // //# 03: compile-time error
 
-class MyImmutableArray extends ImmutableArray {} // /// 04: compile-time error
+class MyImmutableArray extends ImmutableArray {} // //# 04: compile-time error
 
-class MyGrowableObjectArray extends GrowableObjectArray {} // /// 05: compile-time error
+class MyGrowableObjectArray extends GrowableObjectArray {} // //# 05: compile-time error
 
-class MyIntegerImplementation extends IntegerImplementation {} // /// 06: compile-time error
+class MyIntegerImplementation extends IntegerImplementation {} // //# 06: compile-time error
 
-class MySmi extends Smi {} // /// 07: compile-time error
+class MySmi extends Smi {} // //# 07: compile-time error
 
-class MyMint extends Mint {} // /// 08: compile-time error
+class MyMint extends Mint {} // //# 08: compile-time error
 
-class MyBigint extends Bigint {} // /// 09: compile-time error
+class MyBigint extends Bigint {} // //# 09: compile-time error
 
-class MyOneByteString extends OneByteString {} // /// 10: compile-time error
+class MyOneByteString extends OneByteString {} // //# 10: compile-time error
 
-class MyTwoByteString extends TwoByteString {} // /// 11: compile-time error
+class MyTwoByteString extends TwoByteString {} // //# 11: compile-time error
 
-class MyFourByteString extends FourByteString {} // /// 12: compile-time error
+class MyFourByteString extends FourByteString {} // //# 12: compile-time error
 
 main() {
-  new MyBool(); /// 01: continued
+  new MyBool(); //# 01: continued
 
-  new MyDouble(); /// 02: continued
+  new MyDouble(); //# 02: continued
 
-  new MyObjectArray(); /// 03: continued
+  new MyObjectArray(); //# 03: continued
 
-  new MyImmutableArray(); /// 04: continued
+  new MyImmutableArray(); //# 04: continued
 
-  new MyGrowableObjectArray(); /// 05: continued
+  new MyGrowableObjectArray(); //# 05: continued
 
-  new MyIntegerImplementation(); /// 06: continued
+  new MyIntegerImplementation(); //# 06: continued
 
-  new MySmi(); /// 07: continued
+  new MySmi(); //# 07: continued
 
-  new MyMint(); /// 08: continued
+  new MyMint(); //# 08: continued
 
-  new MyBigint(); /// 09: continued
+  new MyBigint(); //# 09: continued
 
-  new MyOneByteString(); /// 10: continued
+  new MyOneByteString(); //# 10: continued
 
-  new MyTwoByteString(); /// 11: continued
+  new MyTwoByteString(); //# 11: continued
 
-  new MyFourByteString(); /// 12: continued
+  new MyFourByteString(); //# 12: continued
 }