Leak Detector: Add support for ScriptPromise on Blink side

public/web/WebLeakDetector.h

 /*
  * Copyright (C) 2014 Google 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.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 29 matching lines @@
 public:
     struct Result {
         unsigned numberOfLiveAudioNodes;
         unsigned numberOfLiveDocuments;
         unsigned numberOfLiveNodes;
         // FIXME: Deprecated, remove once chrome is updated.
         unsigned numberOfLiveRenderObjects;
         unsigned numberOfLiveLayoutObjects;
         unsigned numberOfLiveResources;
         unsigned numberOfLiveActiveDOMObjects;
+        unsigned numberOfLiveScriptPromises;
     };
 
     virtual void onLeakDetectionComplete(const Result&) = 0;
 };
 
 class WebLeakDetector {
 public:
     virtual ~WebLeakDetector() { }
 
     BLINK_EXPORT static WebLeakDetector* create(WebLeakDetectorClient*);
 
     // Cleans up the DOM objects and counts them. |WebLeakDetectorClient::onLeakDetectionComplete()| is called when done.
     // This is supposed to be used for detecting DOM-object leaks.
     virtual void collectGarbageAndGetDOMCounts(WebLocalFrame*) = 0;
 };
 
 } // namespace blink
 
 #endif // WebLeakDetector_h