Encapsulate implementation-specific timeline record handling in TimelineUIUtils

Source/devtools/front_end/timeline/TimelineModelImpl.js

Index: Source/devtools/front_end/timeline/TimelineModelImpl.js
diff --git a/Source/devtools/front_end/timeline/TimelineModelImpl.js b/Source/devtools/front_end/timeline/TimelineModelImpl.js
index 4b95db83e64a82bc21ca96cc09a6edc58be774c1..5c529f2fd22f9588052a9a766c0752b9775de204 100644
--- a/Source/devtools/front_end/timeline/TimelineModelImpl.js
+++ b/Source/devtools/front_end/timeline/TimelineModelImpl.js
@@ -480,42 +480,6 @@ WebInspector.TimelineModel.RecordImpl.prototype = {
     },
 
     /**
-     * @return {?Object}
-     */
-    counters: function()
-    {
-        return this.type() === WebInspector.TimelineModel.RecordType.UpdateCounters ? this.data() : null;
-    },
-
-    /**
-     * @return {boolean}
-     */
-    isProgram: function()
-    {
-        return this.type() === WebInspector.TimelineModel.RecordType.Program;
-    },
-
-    /**
-     * @return {?Object}
-     */
-    highlightQuad: function()
-    {
-        var quad = null;
-        var recordTypes = WebInspector.TimelineModel.RecordType;
-        switch(this.type()) {
-        case recordTypes.Layout:
-            quad = this.data().root;
-            break;
-        case recordTypes.Paint:
-            quad = this.data().clip;
-            break;
-        default:
-            break;
-        }
-        return quad;
-    },
-
-    /**
      * @return {string}
      */
     frameId: function()