Fix static type warnings in test.dart.

tools/testing/dart/test_progress.dart

Index: tools/testing/dart/test_progress.dart
diff --git a/tools/testing/dart/test_progress.dart b/tools/testing/dart/test_progress.dart
index ffe10721f219df000895157b3416039abd1fc124..359b2a1eeba6c3b8b9679c2005ba056ae11e6a7b 100644
--- a/tools/testing/dart/test_progress.dart
+++ b/tools/testing/dart/test_progress.dart
@@ -32,7 +32,7 @@ class ProgressIndicator {
     }
   }
 
-  void testAdded() => _foundTests++;
+  void testAdded() { _foundTests++; }
 
   void start(TestCase test) {
     _printStartProgress(test);
@@ -79,8 +79,8 @@ class ProgressIndicator {
     exit(_failedTests > 0 ? 1 : 0);
   }
 
-  abstract _printStartProgress();
-  abstract _printDoneProgress();
+  abstract _printStartProgress(TestCase test);
+  abstract _printDoneProgress(TestCase test);
 
   String _pad(String s, int length) {
     StringBuffer buffer = new StringBuffer();
@@ -169,6 +169,8 @@ class CompactIndicator extends ProgressIndicator {
 
   void _printStartProgress(TestCase test) => _printProgress();
   void _printDoneProgress(TestCase test) => _printProgress();
+  
+  abstract void _printProgress();
 }