Tons of timeline tweaks

chrome/browser/resources/tracing/timeline_view.js

Index: chrome/browser/resources/tracing/timeline_view.js
diff --git a/chrome/browser/resources/tracing/timeline_view.js b/chrome/browser/resources/tracing/timeline_view.js
index bd4a1d5fa8d3ad19866e0bfd20f4861fcaa6997a..7598ee634d714da08e0e9d30141657c2172be3af 100644
--- a/chrome/browser/resources/tracing/timeline_view.js
+++ b/chrome/browser/resources/tracing/timeline_view.js
@@ -64,7 +64,6 @@ cr.define('tracing', function() {
     },
 
     set traceEvents(traceEvents) {
-      console.log('TimelineView.refresh');
       this.timelineModel_ = new tracing.TimelineModel(traceEvents);
 
       // remove old timeline
@@ -72,10 +71,11 @@ cr.define('tracing', function() {
 
       // create new timeline if needed
       if (traceEvents.length) {
+        if (this.timeline_)
+          this.timeline_.detach();
         this.timeline_ = new tracing.Timeline();
         this.timeline_.model = this.timelineModel_;
         this.timelineContainer_.appendChild(this.timeline_);
-        this.timeline_.onResize();
         this.timeline_.addEventListener('selectionChange',
                                         this.onSelectionChangedBoundToThis_);
         this.onSelectionChanged_();
@@ -85,7 +85,6 @@ cr.define('tracing', function() {
     },
 
     onSelectionChanged_: function(e) {
-      console.log('selection changed');
       var timeline = this.timeline_;
       var selection = timeline.selection;
       if (!selection.length) {
@@ -105,8 +104,9 @@ cr.define('tracing', function() {
             tsRound(slice.start) + ' ms\n';
         text += leftAlign('Duration', c0Width) + ': ' +
             tsRound(slice.duration) + ' ms\n';
-        text += leftAlign('Duration (U)', c0Width) + ': ' +
-            tsRound(slice.durationInUserTime) + ' ms\n';
+        if (slice.durationInUserTime)
+          text += leftAlign('Duration (U)', c0Width) + ': ' +
+              tsRound(slice.durationInUserTime) + ' ms\n';
 
         var n = 0;
         for (var argName in slice.args) {