Merge pull request facebook#2101 from jeffchan/patch-1

Fix typo in ReactDefaultPerfAnalysis comment

Author: zpao

src/test/ReactDefaultPerfAnalysis.js

@@ -178,7 +178,7 @@ function getUnchangedComponents(measurement) {
 
  for (var id in allIDs) {
  var isDirty = false;
- // For each component that rendered, see if a component that triggerd
+ // For each component that rendered, see if a component that triggered
  // a DOM op is in its subtree.
  for (var i = 0; i < dirtyLeafIDs.length; i++) {
  if (dirtyLeafIDs[i].indexOf(id) === 0) {