Clean up test.dart framework.

tools/testing/dart/test_suite.dart

Index: tools/testing/dart/test_suite.dart
===================================================================
--- tools/testing/dart/test_suite.dart	(revision 14052)
+++ tools/testing/dart/test_suite.dart	(working copy)
@@ -155,7 +155,8 @@
                           [new Command(runnerPath, args)],
                           configuration,
                           completeHandler,
-                          expectations));
+                          expectations,
+                          usesWebDriver: false));
     }
   }
 
@@ -457,7 +458,9 @@
                           completeHandler,
                           expectations,
                           isNegative: isNegative,
-                          info: info));
+                          info: info,
+                          usesWebDriver:
+                            TestUtils.usesWebDriver(configuration['runtime'])));
     }
   }
 
@@ -736,7 +739,8 @@
       // Create BrowserTestCase and queue it.
       var testCase = new BrowserTestCase('$suiteName/$testName',
           commands, configuration, completeHandler, expectations,
-          info, info.hasCompileError || info.hasRuntimeError);
+          info, info.hasCompileError || info.hasRuntimeError,
+          useWebDriver: TestUtils.usesWebDriver(runtime));
       doTest(testCase);
     }
   }
@@ -1208,7 +1212,8 @@
                         [new Command('java', args)],
                         updatedConfiguration,
                         completeHandler,
-                        new Set<String>.from([PASS])));
+                        new Set<String>.from([PASS]),
+                        usesWebDriver: TestUtils.usesWebDriver(runtime)));
     doDone();
   }