Ensure embedder timeline callbacks are called for service protocol requests

runtime/vm/timeline.h

 // 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.
 
 #ifndef VM_TIMELINE_H_
 #define VM_TIMELINE_H_
 
 #include "include/dart_tools_api.h"
 
 #include "vm/allocation.h"
@@ skipping 660 matching lines @@
   virtual TimelineEvent* StartEvent() = 0;
   virtual void CompleteEvent(TimelineEvent* event) = 0;
   virtual TimelineEventBlock* GetHeadBlockLocked() = 0;
   virtual TimelineEventBlock* GetNewBlockLocked() = 0;
   virtual void Clear() = 0;
 
   // Utility method(s).
   void PrintJSONMeta(JSONArray* array) const;
   TimelineEvent* ThreadBlockStartEvent();
   void ThreadBlockCompleteEvent(TimelineEvent* event);
+  void PrintEmbedderJSONEvents(JSONStream* events);
 
   Mutex lock_;
   uintptr_t async_id_;
 
   friend class TimelineEvent;
   friend class TimelineEventBlockIterator;
   friend class TimelineStream;
   friend class TimelineTestHelper;
   friend class Timeline;
 
@@ skipping 111 matching lines @@
 
  private:
   TimelineEventBlock* current_;
   TimelineEventRecorder* recorder_;
 };
 
 
 }  // namespace dart
 
 #endif  // VM_TIMELINE_H_