Fix warnings_checker.dart handling of multitests

tests/language_strong/deferred_constraints_constants_test.dart

Index: tests/language_strong/deferred_constraints_constants_test.dart
diff --git a/tests/language_strong/deferred_constraints_constants_test.dart b/tests/language_strong/deferred_constraints_constants_test.dart
index b7e2244b8dea693a66eb246a5a3271280fbe3456..a45ed15034d253abc1ed4f41e909ea6600d0de66 100644
--- a/tests/language_strong/deferred_constraints_constants_test.dart
+++ b/tests/language_strong/deferred_constraints_constants_test.dart
@@ -9,35 +9,35 @@ import 'dart:mirrors';
 import "deferred_constraints_constants_lib.dart" deferred as lib;
 
 const myConst1 =
-  lib.constantInstance; /// reference1: compile-time error
-  /* //                   /// reference1: continued
+  lib.constantInstance; //# reference1: compile-time error
+  /* //                   //# reference1: continued
   499;
-  */ //                   /// reference1: continued
+  */ //                   //# reference1: continued
 const myConst2 =
-  lib.Const.instance; /// reference2: compile-time error
-  /* //                 /// reference2: continued
+  lib.Const.instance; //# reference2: compile-time error
+  /* //                 //# reference2: continued
   499;
-  */ //                 /// reference2: continued
+  */ //                 //# reference2: continued
 
 void f1({a:
-  const lib.Const() /// default_argument1: compile-time error
-  /* //                  /// default_argument1: continued
+  const lib.Const() //# default_argument1: compile-time error
+  /* //                  //# default_argument1: continued
   499
-  */ //                  /// default_argument1: continued
+  */ //                  //# default_argument1: continued
 }) {}
 
 void f2({a:
-  lib.constantInstance /// default_argument2: compile-time error
-  /* //                        /// default_argument2: continued
+  lib.constantInstance //# default_argument2: compile-time error
+  /* //                        //# default_argument2: continued
   499
-  */ //                        /// default_argument2: continued
+  */ //                        //# default_argument2: continued
 }) {}
 
-@lib.Const() /// metadata1: compile-time error
+@lib.Const() //# metadata1: compile-time error
 class H1 {}
-@lib.Const.instance /// metadata2: compile-time error
+@lib.Const.instance //# metadata2: compile-time error
 class H2 {}
-@lib.Const.namedConstructor() /// metadata3: compile-time error
+@lib.Const.namedConstructor() //# metadata3: compile-time error
 class H3 {}
 
 void main() {
@@ -47,11 +47,11 @@ void main() {
   asyncStart();
   lib.loadLibrary().then((_) {
     var instance = lib.constantInstance;
-    var c1 = const lib.Const(); /// constructor1: compile-time error
-    var c2 = const lib.Const.namedConstructor(); /// constructor2: compile-time error
+    var c1 = const lib.Const(); //# constructor1: compile-time error
+    var c2 = const lib.Const.namedConstructor(); //# constructor2: compile-time error
     f1();
     f2();
-    var constInstance = lib.constantInstance; /// reference_after_load: ok
+    var constInstance = lib.constantInstance; //# reference_after_load: ok
     var h1 = new H1();
     var h2 = new H2();
     var h3 = new H3();