[polymer] Merge of master into polymer10-migration

tracing/tracing/extras/tquery/tquery.html

Index: tracing/tracing/extras/tquery/tquery.html
diff --git a/tracing/tracing/extras/tquery/tquery.html b/tracing/tracing/extras/tquery/tquery.html
index 8953d7e9bddd2aee6770e8ba8dab11432780f757..5ea95d9a22ff9d7a9232fbf628969985bfd62aed 100644
--- a/tracing/tracing/extras/tquery/tquery.html
+++ b/tracing/tracing/extras/tquery/tquery.html
@@ -147,13 +147,12 @@ tr.exportTo('tr.e.tquery', function() {
     // model.
     selectEverythingAsTask_: function(selection) {
       var filterTask = new tr.b.Task();
-      this.model_.iterateAllEventContainers(function(container) {
-        filterTask.subTask(function() {
-          container.iterateAllEventsInThisContainer(
-              function() { return true; },
-              addEventTreeToSelection.bind(undefined, selection));
+      for (var container of this.model_.getDescendantEventContainers()) {
+        filterTask.subTask(() => {
+          for (var event of container.childEvents())
+            addEventTreeToSelection(selection, event);
         }, this);
-      }, this);
+      }
       return filterTask;
     },