Fix warnings_checker.dart handling of multitests

tests/language_strong/external_test.dart

Index: tests/language_strong/external_test.dart
diff --git a/tests/language_strong/external_test.dart b/tests/language_strong/external_test.dart
index 1afe6a547cfae28e1f122ed879b252b71e4eee66..01c71423e9350fa82d4bc550141d67801cebf647 100644
--- a/tests/language_strong/external_test.dart
+++ b/tests/language_strong/external_test.dart
@@ -12,26 +12,26 @@ class Foo {
 
   Foo() : x = 0;
 
-  external var x01; // /// 01: compile-time error
-  external int x02; // /// 02: compile-time error
-
-  external f10(); //  /// 10: runtime error
-  external f11() { } // /// 11: compile-time error
-  external f12() => 1; // /// 12: compile-time error
-  external static f13(); // /// 13: runtime error
-  static external f14(); // /// 14: compile-time error
-  int external f16(); // /// 16: compile-time error
-
-  external Foo.n20(val); // /// 20: runtime error
-  external Foo.n21(val) : x = 1; // /// 21: compile-time error
-  external Foo.n22(val) { x = 1; } // /// 22: compile-time error
-  external factory Foo.n23(val) => new Foo(); // /// 23: compile-time error
-  external Foo.n24(this.x); // /// 24: compile-time error
-  external factory Foo.n25(val) = Bar; // /// 25: compile-time error
+  external var x01; // //# 01: compile-time error
+  external int x02; // //# 02: compile-time error
+
+  external f10(); //  //# 10: runtime error
+  external f11() { } // //# 11: compile-time error
+  external f12() => 1; // //# 12: compile-time error
+  external static f13(); // //# 13: runtime error
+  static external f14(); // //# 14: compile-time error
+  int external f16(); // //# 16: compile-time error
+
+  external Foo.n20(val); // //# 20: runtime error
+  external Foo.n21(val) : x = 1; // //# 21: compile-time error
+  external Foo.n22(val) { x = 1; } // //# 22: compile-time error
+  external factory Foo.n23(val) => new Foo(); // //# 23: compile-time error
+  external Foo.n24(this.x); // //# 24: compile-time error
+  external factory Foo.n25(val) = Bar; // //# 25: compile-time error
 }
 
-external int t06(int i) { } // /// 30: compile-time error
-external int t07(int i) => i + 1; // /// 31: compile-time error
+external int t06(int i) { } // //# 30: compile-time error
+external int t07(int i) => i + 1; // //# 31: compile-time error
 
 main() {
 
@@ -39,21 +39,21 @@ main() {
   var foo = new Foo();
 
   // Try calling an unpatched external function.
-  new Foo().f10(); //                                   /// 10: continued
-  new Foo().f11(); //                                   /// 11: continued
-  new Foo().f12(); //                                   /// 12: continued
-  Foo.f13(); //                                         /// 13: continued
-  Foo.f14(); //                                         /// 14: continued
-  new Foo().f16(); //                                   /// 16: continued
+  new Foo().f10(); //                                   //# 10: continued
+  new Foo().f11(); //                                   //# 11: continued
+  new Foo().f12(); //                                   //# 12: continued
+  Foo.f13(); //                                         //# 13: continued
+  Foo.f14(); //                                         //# 14: continued
+  new Foo().f16(); //                                   //# 16: continued
 
   // Try calling an unpatched external constructor.
-  new Foo.n20(1); //                                     /// 20: continued
-  new Foo.n21(1); //                                     /// 21: continued
-  new Foo.n22(1); //                                     /// 22: continued
-  new Foo.n23(1); //                                     /// 23: continued
-  new Foo.n24(1); //                                     /// 24: continued
-  new Foo.n25(1); //                                     /// 25: continued
-
-  t06(1); //                                            /// 30: continued
-  t07(1); //                                            /// 31: continued
+  new Foo.n20(1); //                                     //# 20: continued
+  new Foo.n21(1); //                                     //# 21: continued
+  new Foo.n22(1); //                                     //# 22: continued
+  new Foo.n23(1); //                                     //# 23: continued
+  new Foo.n24(1); //                                     //# 24: continued
+  new Foo.n25(1); //                                     //# 25: continued
+
+  t06(1); //                                            //# 30: continued
+  t07(1); //                                            //# 31: continued
 }