Encapsulate implementation-specific timeline record handling in TimelineUIUtils

Source/devtools/front_end/timeline/MemoryCountersGraph.js

Index: Source/devtools/front_end/timeline/MemoryCountersGraph.js
diff --git a/Source/devtools/front_end/timeline/MemoryCountersGraph.js b/Source/devtools/front_end/timeline/MemoryCountersGraph.js
index 6452dd907bca543952e628c86f80bfd2a02ebc8e..055733d2a58409ba3c5217f67e4ca34e0f161dc6 100644
--- a/Source/devtools/front_end/timeline/MemoryCountersGraph.js
+++ b/Source/devtools/front_end/timeline/MemoryCountersGraph.js
@@ -34,10 +34,12 @@
  * @implements {WebInspector.TimelineModeView}
  * @param {!WebInspector.TimelineModeViewDelegate} delegate
  * @param {!WebInspector.TimelineModel} model
+ * @param {!WebInspector.TimelineUIUtils} uiUtils
  */
-WebInspector.MemoryCountersGraph = function(delegate, model)
+WebInspector.MemoryCountersGraph = function(delegate, model, uiUtils)
 {
     WebInspector.CountersGraph.call(this, WebInspector.UIString("MEMORY"), delegate, model);
+    this._uiUtils = uiUtils;
     this._countersByName = {};
     this._countersByName["jsHeapSizeUsed"] = this.createCounter(WebInspector.UIString("Used JS Heap"), WebInspector.UIString("JS Heap Size: %d"), "hsl(220, 90%, 43%)");
     this._countersByName["documents"] = this.createCounter(WebInspector.UIString("Documents"), WebInspector.UIString("Documents: %d"), "hsl(0, 90%, 43%)");
@@ -69,7 +71,7 @@ WebInspector.MemoryCountersGraph.prototype = {
          */
         function addStatistics(record)
         {
-            var counters = record.counters();
+            var counters = this._uiUtils.countersForRecord(record);
             if (!counters)
                 return;
             for (var name in counters) {