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

tracing/tracing/trace2html.html

Index: tracing/tracing/trace2html.html
diff --git a/tracing/tracing/trace2html.html b/tracing/tracing/trace2html.html
index a27d274e991a9ce024bdb04e984a09c3b18205e9..4b410cb040e2c4460e25b4f4d5d547a8502dc170 100644
--- a/tracing/tracing/trace2html.html
+++ b/tracing/tracing/trace2html.html
@@ -50,7 +50,7 @@ document.addEventListener('DOMContentLoaded', function() {
   for (var i = 0; i < viewerDataScripts.length; i++) {
     var text = Polymer.dom(viewerDataScripts[i]).textContent;
     // Trim leading newlines off the text. They happen during writing.
-    while (text[0] == '\n')
+    while (text[0] === '\n')
       text = text.substring(1);
     traces.push(tr.b.Base64.atob(text));
   }