Add TRACE_COUNTER support to about:tracing

chrome/browser/resources/tracing/profiling_view.js

Index: chrome/browser/resources/tracing/profiling_view.js
diff --git a/chrome/browser/resources/tracing/profiling_view.js b/chrome/browser/resources/tracing/profiling_view.js
index a4f13de13cf9635ff91f4c5d2aa38bdf99c3700b..11cd27005b115b0b50705b506360aa32702d0906 100644
--- a/chrome/browser/resources/tracing/profiling_view.js
+++ b/chrome/browser/resources/tracing/profiling_view.js
@@ -46,10 +46,8 @@ cr.define('tracing', function() {
       this.timelineView_ = new TimelineView();
 
       this.controlDiv_.appendChild(this.recordBn_);
-      if (!browserBridge.debugMode) {
-        this.controlDiv_.appendChild(this.loadBn_);
-        this.controlDiv_.appendChild(this.saveBn_);
-      }
+      this.controlDiv_.appendChild(this.loadBn_);
+      this.controlDiv_.appendChild(this.saveBn_);
 
       this.container_.appendChild(this.timelineView_);
       this.appendChild(this.container_);