Restructure pkg/unittest and pkg/webdriver to follow the pub conventions.

tests/isolate/timer_repeat_test.dart

Index: tests/isolate/timer_repeat_test.dart
===================================================================
--- tests/isolate/timer_repeat_test.dart	(revision 14313)
+++ tests/isolate/timer_repeat_test.dart	(working copy)
@@ -2,28 +2,28 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-#library('timer_repeat_test');
+library timer_repeat_test;
 
-#import("dart:isolate");
-#import('../../pkg/unittest/unittest.dart');
+import 'dart:isolate';
+import '../../pkg/unittest/lib/unittest.dart';
 
-  const int TIMEOUT = 500;
-  const int ITERATIONS = 5;
+const int TIMEOUT = 500;
+const int ITERATIONS = 5;
 
-  Timer timer;
-  int startTime;
-  int iteration;
+Timer timer;
+int startTime;
+int iteration;
   
-  void timeoutHandler(Timer timer) {
-    int endTime = (new Date.now()).millisecondsSinceEpoch;
-    iteration++;
-    if (iteration < ITERATIONS) {
-      startTime = (new Date.now()).millisecondsSinceEpoch;
-    } else {
-      expect(iteration, ITERATIONS);
-      timer.cancel();
-    }
+void timeoutHandler(Timer timer) {
+  int endTime = (new Date.now()).millisecondsSinceEpoch;
+  iteration++;
+  if (iteration < ITERATIONS) {
+    startTime = (new Date.now()).millisecondsSinceEpoch;
+  } else {
+    expect(iteration, ITERATIONS);
+    timer.cancel();
   }
+}
 
 main() {
   test("timer_repeat", () {