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

tracing/tracing/extras/chrome/cc/region.html

Index: tracing/tracing/extras/chrome/cc/region.html
diff --git a/tracing/tracing/extras/chrome/cc/region.html b/tracing/tracing/extras/chrome/cc/region.html
index e9b986c90eeb0c216bb289fc33d5e5e771d99a67..dd86a71b1d125164ededada83c16da955ac510a1 100644
--- a/tracing/tracing/extras/chrome/cc/region.html
+++ b/tracing/tracing/extras/chrome/cc/region.html
@@ -18,8 +18,9 @@ tr.exportTo('tr.e.cc', function() {
   }
 
   Region.fromArray = function(array) {
-    if (array.length % 4 !== 0)
+    if (array.length % 4 !== 0) {
       throw new Error('Array must consist be a multiple of 4 in length');
+    }
 
     var r = new Region();
     for (var i = 0; i < array.length; i += 4) {
@@ -34,8 +35,7 @@ tr.exportTo('tr.e.cc', function() {
    * returns Region.fromArray(array).
    */
   Region.fromArrayOrUndefined = function(array) {
-    if (array === undefined)
-      return new Region();
+    if (array === undefined) return new Region();
     return Region.fromArray(array);
   };
 
@@ -44,8 +44,7 @@ tr.exportTo('tr.e.cc', function() {
 
     rectIntersects: function(r) {
       for (var i = 0; i < this.rects.length; i++) {
-        if (this.rects[i].intersects(r))
-          return true;
+        if (this.rects[i].intersects(r)) return true;
       }
       return false;
     },