Timeline: do not remove trace object snapshots from event list of their threads

Source/devtools/front_end/timeline/TracingModel.js

 /*
  * Copyright 2014 The Chromium Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 /**
  * @constructor
  * @extends {WebInspector.TargetAwareObject}
  */
@@ skipping 167 matching lines @@
       * @param {!WebInspector.TracingModel.EventPayload} payload
       */
     _addEvent: function(payload)
     {
         var process = this._processById[payload.pid];
         if (!process) {
             process = new WebInspector.TracingModel.Process(payload.pid);
             this._processById[payload.pid] = process;
         }
         var thread = process.threadById(payload.tid);
-        if (payload.ph === WebInspector.TracingModel.Phase.SnapshotObject) {
-            var event = thread.addEvent(payload);
-            process.addObject(event);
-            return;
-        }
         if (payload.ph !== WebInspector.TracingModel.Phase.Metadata) {
             var timestamp = payload.ts / 1000;
             // We do allow records for unrelated threads to arrive out-of-order,
             // so there's a chance we're getting records from the past.
             if (timestamp && (!this._minimumRecordTime || timestamp < this._minimumRecordTime))
                 this._minimumRecordTime = timestamp;
             if (!this._maximumRecordTime || timestamp > this._maximumRecordTime)
                 this._maximumRecordTime = timestamp;
             var event = thread.addEvent(payload);
+            if (payload.ph === WebInspector.TracingModel.Phase.SnapshotObject)
+                process.addObject(event);
             if (event && event.name === WebInspector.TracingModel.DevToolsMetadataEvent.TracingStartedInPage &&
                 event.category === WebInspector.TracingModel.DevToolsMetadataEventCategory &&
                 event.args["sessionId"] === this._sessionId)
                 this._devtoolsMetadataEvents.push(event);
             return;
         }
         switch (payload.name) {
         case WebInspector.TracingModel.MetadataEvent.ProcessSortIndex:
             process._setSortIndex(payload.args["sort_index"]);
             break;
@@ skipping 340 matching lines @@
     dataCollected: function(data)
     {
         this._tracingModel._eventsCollected(data);
     },
 
     tracingComplete: function()
     {
         this._tracingModel._tracingComplete();
     }
 }