Change all == to === and != to !== in trace viewer.

tracing/tracing/model/helpers/chrome_browser_helper.html

Index: tracing/tracing/model/helpers/chrome_browser_helper.html
diff --git a/tracing/tracing/model/helpers/chrome_browser_helper.html b/tracing/tracing/model/helpers/chrome_browser_helper.html
index 9daa346888a7afdfc60263c156c66051eece738e..d958d69f4d1b58823e70582ab2f3647051d7e110 100644
--- a/tracing/tracing/model/helpers/chrome_browser_helper.html
+++ b/tracing/tracing/model/helpers/chrome_browser_helper.html
@@ -95,9 +95,9 @@ tr.exportTo('tr.model.helpers', function() {
       this.modelHelper.model.getAllThreads().forEach(function(thread) {
         thread.asyncSliceGroup.slices.forEach(function(slice) {
           var match = false;
-          if (slice.category == 'net' ||  // old-style URLRequest/Resource
-              slice.category == 'disabled-by-default-netlog' ||
-              slice.category == 'netlog') {
+          if (slice.category === 'net' ||  // old-style URLRequest/Resource
+              slice.category === 'disabled-by-default-netlog' ||
+              slice.category === 'netlog') {
             match = true;
           }