DevTools: Auto close open sync trace events.

third_party/WebKit/Source/devtools/front_end/sdk/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
  * @param {!WebInspector.BackingStorage} backingStorage
  */
@@ skipping 843 matching lines @@
                 if (top.name !== e.name || top.categoriesString !== e.categoriesString)
                     console.error("B/E events mismatch at " + top.startTime + " (" + top.name + ") vs. " + e.startTime + " (" + e.name + ")");
                 else
                     top._complete(e);
                 break;
             case phases.Begin:
                 stack.push(e);
                 break;
             }
         }
+        while (stack.length)
+            stack.pop().setEndTime(this._model.maximumRecordTime());
         this._events.remove(null, false);
     },
 
     /**
      * @param {!WebInspector.TracingManager.EventPayload} payload
      * @return {?WebInspector.TracingModel.Event} event
      */
     _addEvent: function(payload)
     {
         var event = payload.ph === WebInspector.TracingModel.Phase.SnapshotObject
@@ skipping 54 matching lines @@
     /**
      * @return {!Array.<!WebInspector.TracingModel.AsyncEvent>}
      */
     asyncEvents: function()
     {
         return this._asyncEvents;
     },
 
     __proto__: WebInspector.TracingModel.NamedObject.prototype
 }