[ESLint] Fix violations when enabling curly rule in eslint.

tracing/tracing/extras/vsync/vsync_auditor_test.html

Index: tracing/tracing/extras/vsync/vsync_auditor_test.html
diff --git a/tracing/tracing/extras/vsync/vsync_auditor_test.html b/tracing/tracing/extras/vsync/vsync_auditor_test.html
index d4c4b81f0d60598ac05c36cb8ae59f6a481868a0..5cb68cdd04b39ba83b8d82f7cef639626955c9c7 100644
--- a/tracing/tracing/extras/vsync/vsync_auditor_test.html
+++ b/tracing/tracing/extras/vsync/vsync_auditor_test.html
@@ -30,8 +30,9 @@ tr.b.unittest.testSuite(function() {
     var process = model.getOrCreateProcess(1);
     for (var i = 0; i < slices.length; i++) {
       var thread = process.getOrCreateThread(i);
-      for (var j = 0; j < slices[i].length; j++)
+      for (var j = 0; j < slices[i].length; j++) {
         thread.sliceGroup.pushSlice(slices[i][j]);
+      }
     }
     for (var i = 0; i < counters.length; i++) {
       var counter = process.getOrCreateCounter(
@@ -48,8 +49,9 @@ tr.b.unittest.testSuite(function() {
 
   function buildCounterSeries(name, timestamps) {
     var series = new CounterSeries(name, '');
-    for (var i = 0; i < timestamps.length; i++)
+    for (var i = 0; i < timestamps.length; i++) {
       series.addCounterSample(timestamps[i], 1);
+    }
     return series;
   }