test.dart: print suite name in browser tests

tools/testing/dart/test_suite.dart

Index: tools/testing/dart/test_suite.dart
diff --git a/tools/testing/dart/test_suite.dart b/tools/testing/dart/test_suite.dart
index a7255dfec83eef2e62c2cd3a9106b8172ec25be2..e69c1b1825088258c9ed1269a68368ef869b1b1f 100644
--- a/tools/testing/dart/test_suite.dart
+++ b/tools/testing/dart/test_suite.dart
@@ -655,8 +655,9 @@ class StandardTestSuite implements TestSuite {
       commands.add(new Command('python', args));
 
       // Create BrowserTestCase and queue it.
-      var testCase = new BrowserTestCase(testName, commands, configuration,
-          completeHandler, expectations, optionsFromFile['isNegative']);
+      var testCase = new BrowserTestCase('$suiteName/$testName',
+          commands, configuration, completeHandler, expectations,
+          optionsFromFile['isNegative']);
       doTest(testCase);
     }
   }