[polymer] Merge of master into polymer10-migration

tracing/tracing/model/helpers/chrome_browser_helper.html

Index: tracing/tracing/model/helpers/chrome_browser_helper.html
diff --git a/tracing/tracing/model/helpers/chrome_browser_helper.html b/tracing/tracing/model/helpers/chrome_browser_helper.html
index 0e6d295a471f1639c06528ca317fe0c579a3ee9a..f1f0a438e1536ed61386ba6a07b094dba62bc12d 100644
--- a/tracing/tracing/model/helpers/chrome_browser_helper.html
+++ b/tracing/tracing/model/helpers/chrome_browser_helper.html
@@ -57,16 +57,14 @@ tr.exportTo('tr.model.helpers', function() {
 
     get hasLatencyEvents() {
       var hasLatency = false;
-      this.modelHelper.model.getAllThreads().some(function(thread) {
-        thread.iterateAllEvents(function(event) {
+      for (var thread of this.modelHelper.model.getAllThreads())
+        for (var event of thread.getDescendantEvents()) {
           if (!event.isTopLevel)
-            return;
+            continue;
           if (!(event instanceof tr.e.cc.InputLatencyAsyncSlice))
-            return;
+            continue;
           hasLatency = true;
-        });
-        return hasLatency;
-      });
+        }
       return hasLatency;
     },
 
@@ -81,10 +79,9 @@ tr.exportTo('tr.model.helpers', function() {
     getAllAsyncSlicesMatching: function(pred, opt_this) {
       var events = [];
       this.iterAllThreads(function(thread) {
-        thread.iterateAllEvents(function(slice) {
+        for (var slice of thread.getDescendantEvents())
           if (pred.call(opt_this, slice))
             events.push(slice);
-        });
       });
       return events;
     },