Format all tests.

tests/html/native_gc_test.dart

 library NativeGCTest;
+
 import 'package:unittest/unittest.dart';
 import 'package:unittest/html_config.dart';
 import 'dart:html';
 
 var testEvent = new EventStreamProvider<Event>('test');
 
 main() {
   useHtmlConfiguration();
 
   test('EventListener', () {
-      final int N = 1000000;
-      final int M = 1000;
+    final int N = 1000000;
+    final int M = 1000;
 
-      var div;
-      for (int i = 0; i < M; ++i) {
-        // This memory should be freed when the listener below is
-        // collected.
-        List l = new List(N);
+    var div;
+    for (int i = 0; i < M; ++i) {
+      // This memory should be freed when the listener below is
+      // collected.
+      List l = new List(N);
 
-        // Record the iteration number.
-        l[N - 1] = i;
+      // Record the iteration number.
+      l[N - 1] = i;
 
-        div = new Element.tag('div');
-        testEvent.forTarget(div).listen((_) {
-            // Only the final iteration's listener should be invoked.
-            // Note: the reference to l keeps the entire list alive.
-            expect(l[N - 1], M - 1);
-          });
-      }
+      div = new Element.tag('div');
+      testEvent.forTarget(div).listen((_) {
+        // Only the final iteration's listener should be invoked.
+        // Note: the reference to l keeps the entire list alive.
+        expect(l[N - 1], M - 1);
+      });
+    }
 
-      final event = new Event('test');
-      div.dispatchEvent(event);
+    final event = new Event('test');
+    div.dispatchEvent(event);
   });
 
   test('WindowEventListener', () {
     String message = 'WindowEventListenerTestPingMessage';
 
     Element testDiv = new DivElement();
     testDiv.id = '#TestDiv';
     document.body.append(testDiv);
     window.onMessage.listen((e) {
       if (e.data == message) testDiv.click();
     });
 
     for (int i = 0; i < 100; ++i) {
       triggerMajorGC();
     }
 
     testDiv.onClick.listen(expectAsync((e) {}));
     window.postMessage(message, '*');
   });
 }
 
 void triggerMajorGC() {
   List list = new List(1000000);
   Element div = new DivElement();
   div.onClick.listen((e) => print(list[0]));
 }