Parametrize TimelinePresentationModel with coalescable record types

Source/devtools/front_end/timeline/TimelinePresentationModel.js

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  * Copyright (C) 2012 Intel Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 15 matching lines @@
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 /**
  * @constructor
  * @extends {WebInspector.Object}
  * @param {!WebInspector.TimelineModel} model
+ * @param {!Object.<string, number>} coalescableRecordTypes
  */
-WebInspector.TimelinePresentationModel = function(model)
+WebInspector.TimelinePresentationModel = function(model, coalescableRecordTypes)
 {
     this._model = model;
+    this._coalescableRecordTypes = coalescableRecordTypes;
     this._filters = [];
     /**
      * @type {!Map.<!WebInspector.TimelineModel.Record, !WebInspector.TimelinePresentationModel.Record>}
      */
     this._recordToPresentationRecord = new Map();
     this.reset();
 }
 
-WebInspector.TimelinePresentationModel._coalescingRecords = { };
-WebInspector.TimelinePresentationModel._coalescingRecords[WebInspector.TimelineModel.RecordType.Layout] = 1;
-WebInspector.TimelinePresentationModel._coalescingRecords[WebInspector.TimelineModel.RecordType.Paint] = 1;
-WebInspector.TimelinePresentationModel._coalescingRecords[WebInspector.TimelineModel.RecordType.Rasterize] = 1;
-WebInspector.TimelinePresentationModel._coalescingRecords[WebInspector.TimelineModel.RecordType.DecodeImage] = 1;
-WebInspector.TimelinePresentationModel._coalescingRecords[WebInspector.TimelineModel.RecordType.ResizeImage] = 1;
-
 WebInspector.TimelinePresentationModel.prototype = {
     /**
      * @param {number} startTime
      * @param {number} endTime
      */
     setWindowTimes: function(startTime, endTime)
     {
         this._windowStartTime = startTime;
         this._windowEndTime = endTime;
     },
@@ skipping 79 matching lines @@
 
         var lastRecord = bucket ? this._coalescingBuckets[bucket] : newParent._presentationChildren.peekLast();
         if (lastRecord && lastRecord.coalesced())
             lastRecord = lastRecord._presentationChildren.peekLast();
         var startTime = record.startTime();
         var endTime = record.endTime();
         if (!lastRecord)
             return null;
         if (lastRecord.record().type() !== record.type())
             return null;
-        if (!WebInspector.TimelinePresentationModel._coalescingRecords[record.type()])
+        if (!this._coalescableRecordTypes[record.type()])
             return null;
         if (lastRecord.record().endTime() + coalescingThresholdMillis < startTime)
             return null;
         if (endTime + coalescingThresholdMillis < lastRecord.record().startTime())
             return null;
         if (lastRecord.presentationParent().coalesced())
             return lastRecord.presentationParent();
         return this._replaceWithCoalescedRecord(lastRecord);
     },
 
@@ skipping 439 matching lines @@
     /**
      * @return {boolean}
      */
     hasWarnings: function()
     {
         return false;
     },
 
     __proto__: WebInspector.TimelinePresentationModel.Record.prototype
 }