import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

dom/performance/PerformanceObserver.h

@@ -0,0 +1,79 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_dom_PerformanceObserver_h__
+#define mozilla_dom_PerformanceObserver_h__
+
+#include "nsCOMPtr.h"
+#include "nsISupports.h"
+#include "mozilla/RefPtr.h"
+#include "nsString.h"
+#include "nsTArray.h"
+#include "nsWrapperCache.h"
+
+class nsPIDOMWindowInner;
+
+namespace mozilla {
+
+class ErrorResult;
+
+namespace dom {
+
+class GlobalObject;
+class Performance;
+class PerformanceEntry;
+class PerformanceObserverCallback;
+struct PerformanceObserverInit;
+namespace workers {
+class WorkerPrivate;
+} // namespace workers
+
+class PerformanceObserver final : public nsISupports,
+                                  public nsWrapperCache
+{
+public:
+  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(PerformanceObserver)
+
+  static already_AddRefed<PerformanceObserver>
+  Constructor(const GlobalObject& aGlobal,
+              PerformanceObserverCallback& aCb,
+              ErrorResult& aRv);
+
+  PerformanceObserver(nsPIDOMWindowInner* aOwner,
+                      PerformanceObserverCallback& aCb);
+
+  PerformanceObserver(workers::WorkerPrivate* aWorkerPrivate,
+                      PerformanceObserverCallback& aCb);
+
+  virtual JSObject* WrapObject(JSContext* aCx,
+                               JS::Handle<JSObject*> aGivenProto) override;
+
+  nsISupports* GetParentObject() const { return mOwner; }
+
+  void Observe(const PerformanceObserverInit& aOptions,
+               mozilla::ErrorResult& aRv);
+
+  void Disconnect();
+
+  void Notify();
+  void QueueEntry(PerformanceEntry* aEntry);
+
+private:
+  ~PerformanceObserver();
+
+  nsCOMPtr<nsISupports> mOwner;
+  RefPtr<PerformanceObserverCallback> mCallback;
+  RefPtr<Performance> mPerformance;
+  nsTArray<nsString> mEntryTypes;
+  bool mConnected;
+  nsTArray<RefPtr<PerformanceEntry>> mQueuedEntries;
+};
+
+} // namespace dom
+} // namespace mozilla
+
+#endif