Use isProgram method to detect Program events

The method allows to avoid direct access to implementation specific RecordType enum.

BUG=361045
R=loislo@chromium.org

Review URL: https://codereview.chromium.org/342473003

git-svn-id: svn://svn.chromium.org/blink/trunk@176314 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/Source/devtools/front_end/timeline/TimelineModel.js

@@ -415,6 +415,11 @@ WebInspector.TimelineModel.Record.prototype = {
      */
     counters: function() { },
 
+    /**
+     * @return {boolean}
+     */
+    isProgram: function() { },
+
     /**
      * @return {string}
      */

third_party/WebKit/Source/devtools/front_end/timeline/TimelineModelImpl.js

@@ -487,6 +487,14 @@ WebInspector.TimelineModel.RecordImpl.prototype = {
         return this.type() === WebInspector.TimelineModel.RecordType.UpdateCounters ? this.data() : null;
     },
 
+    /**
+     * @return {boolean}
+     */
+    isProgram: function()
+    {
+        return this.type() === WebInspector.TimelineModel.RecordType.Program;
+    },
+
     /**
      * @return {?Object}
      */

third_party/WebKit/Source/devtools/front_end/timeline/TimelinePresentationModel.js

@@ -88,14 +88,13 @@ WebInspector.TimelinePresentationModel.prototype = {
      */
     addRecord: function(record)
     {
-        var records;
-        if (record.type() === WebInspector.TimelineModel.RecordType.Program)
-            records = record.children();
-        else
-            records = [record];
-
-        for (var i = 0; i < records.length; ++i)
-            this._innerAddRecord(this._rootRecord, records[i]);
+        if (record.isProgram()) {
+            var records = record.children();
+            for (var i = 0; i < records.length; ++i)
+                this._innerAddRecord(this._rootRecord, records[i]);
+        } else {
+            this._innerAddRecord(this._rootRecord, record);
+        }
     },
 
     /**

third_party/WebKit/Source/devtools/front_end/timeline/TracingTimelineModel.js

@@ -612,6 +612,14 @@ WebInspector.TracingTimelineModel.TraceEventRecord.prototype = {
         return this.type() === WebInspector.TracingTimelineModel.RecordType.UpdateCounters ? this._event.args.data : null;
     },
 
+    /**
+     * @return {boolean}
+     */
+    isProgram: function()
+    {
+        return this.type() === WebInspector.TracingTimelineModel.RecordType.Program;
+    },
+
     /**
      * @return {?Object}
      */