Handle duration events when filtering the timeline for a time range

runtime/lib/timeline.cc

 // Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/bootstrap_natives.h"
 
 #include "include/dart_api.h"
 
 #include "vm/native_entry.h"
 #include "vm/object.h"
@@ skipping 107 matching lines @@
       duration,
       args.ToCString());
 
   TimelineEvent* event = isolate->GetDartStream()->StartEvent();
   if (event == NULL) {
     // Stream was turned off.
     return Object::null();
   }
   // json was allocated in the zone and a copy will be stored in event.
   event->SerializedJSON(json, start.AsInt64Value(), end.AsInt64Value());
+  event->SetSerializedJSONIsDuration(true);
   event->Complete();
 
   return Object::null();
 }
 
 
 DEFINE_NATIVE_ENTRY(Timeline_reportInstantEvent, 4) {
   GET_NON_NULL_NATIVE_ARGUMENT(Integer, start, arguments->NativeArgAt(0));
   GET_NON_NULL_NATIVE_ARGUMENT(String, category, arguments->NativeArgAt(1));
   GET_NON_NULL_NATIVE_ARGUMENT(String, name, arguments->NativeArgAt(2));
@@ skipping 30 matching lines @@
     return Object::null();
   }
   // json was allocated in the zone and a copy will be stored in event.
   event->SerializedJSON(json, start.AsInt64Value(), 0);
   event->Complete();
 
   return Object::null();
 }
 
 }  // namespace dart