Second round of cleanups for new optional parameter semantics.

pkg/unittest/test/mock_test.dart

Index: pkg/unittest/test/mock_test.dart
===================================================================
--- pkg/unittest/test/mock_test.dart	(revision 13712)
+++ pkg/unittest/test/mock_test.dart	(working copy)
@@ -471,12 +471,12 @@
         distance:3, includeKeys:true);
     expect(result.logs, orderedEquals([e1, e2, e3]));
 
-    result = logList.preceding(keyList, equals('a'), callsTo(startsWith('bar')),
-      distance:3);
+    result = logList.preceding(keyList, mockNameFilter: equals('a'),
+        logFilter: callsTo(startsWith('bar')), distance:3);
     expect(result.logs, orderedEquals([e1]));
 
-    result = logList.preceding(keyList, equals('a'), callsTo(startsWith('bar')),
-        distance:3, includeKeys:true);
+    result = logList.preceding(keyList, mockNameFilter: equals('a'),
+        logFilter: callsTo(startsWith('bar')), distance:3, includeKeys:true);
     expect(result.logs, orderedEquals([e1, e3]));
 
     keyList.logs.clear();