Implement single/multi V8 GC objects statistics sub view.

tracing/tracing/ui/analysis/related_events.html

Index: tracing/tracing/ui/analysis/related_events.html
diff --git a/tracing/tracing/ui/analysis/related_events.html b/tracing/tracing/ui/analysis/related_events.html
index 64e6a8f7e422da64881f6994cdc8bd8da75accf2..142887260ad176ecdc7306cf85fef8c7c1060766 100644
--- a/tracing/tracing/ui/analysis/related_events.html
+++ b/tracing/tracing/ui/analysis/related_events.html
@@ -98,6 +98,7 @@ Polymer({
     this.cancelAllTasks_();
     this.eventGroups_ = [];
     this.addRuntimeCallStats_(eventSet);
+    this.addV8GCObjectStats_(eventSet);
     this.addV8Slices_(eventSet);
     this.addConnectedFlows_(eventSet);
     this.addConnectedEvents_(eventSet);
@@ -296,6 +297,21 @@ Polymer({
     }
   },
 
+  addV8GCObjectStats_: function(eventSet) {
+    var slices = new tr.model.EventSet;
+    for (var slice of eventSet) {
+      if (slice.title === 'V8.GC_Objects_Stats')
+        slices.push(slice);
+    }
+    if (slices.length > 0) {
+      this.eventGroups_.push({
+        type: 'V8 GC stats table',
+        tooltip: 'All V8 GC statistics slices in the selected set.',
+        selection: slices
+      });
+    }
+  },
+
   updateContents_: function() {
     var table = this.$.table;
     if (this.eventGroups_ === undefined)