diff -r 000000000000 -r 6474c204b198 dom/base/nsMimeTypeArray.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/base/nsMimeTypeArray.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,98 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=2 sw=2 et tw=79: */
+/* 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 nsMimeTypeArray_h___
+#define nsMimeTypeArray_h___
+
+#include "nsString.h"
+#include "nsTArray.h"
+#include "nsWrapperCache.h"
+#include "nsAutoPtr.h"
+#include "nsPIDOMWindow.h"
+
+class nsMimeType;
+class nsPluginElement;
+
+class nsMimeTypeArray MOZ_FINAL : public nsISupports,
+                                  public nsWrapperCache
+{
+public:
+  nsMimeTypeArray(nsPIDOMWindow* aWindow);
+  virtual ~nsMimeTypeArray();
+
+  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(nsMimeTypeArray)
+
+  nsPIDOMWindow* GetParentObject() const;
+  virtual JSObject* WrapObject(JSContext* aCx) MOZ_OVERRIDE;
+
+  void Refresh();
+
+  // MimeTypeArray WebIDL methods
+  nsMimeType* Item(uint32_t index);
+  nsMimeType* NamedItem(const nsAString& name);
+  nsMimeType* IndexedGetter(uint32_t index, bool &found);
+  nsMimeType* NamedGetter(const nsAString& name, bool &found);
+  bool NameIsEnumerable(const nsAString& name);
+  uint32_t Length();
+  void GetSupportedNames(unsigned, nsTArray< nsString >& retval);
+
+protected:
+  void EnsurePluginMimeTypes();
+  void Clear();
+
+  nsCOMPtr<nsPIDOMWindow> mWindow;
+
+  // mMimeTypes contains MIME types handled by non-hidden plugins, those
+  // popular plugins that must be exposed in navigator.plugins enumeration to
+  // avoid breaking web content. Likewise, mMimeTypes are exposed in
+  // navigator.mimeTypes enumeration.
+  nsTArray<nsRefPtr<nsMimeType> > mMimeTypes;
+
+  // mHiddenMimeTypes contains MIME types handled by plugins hidden from
+  // navigator.plugins enumeration or by an OS PreferredApplicationHandler.
+  // mHiddenMimeTypes are hidden from navigator.mimeTypes enumeration.
+  nsTArray<nsRefPtr<nsMimeType> > mHiddenMimeTypes;
+};
+
+class nsMimeType MOZ_FINAL : public nsWrapperCache
+{
+public:
+  NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(nsMimeType)
+  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS(nsMimeType)
+
+  nsMimeType(nsPIDOMWindow* aWindow, nsPluginElement* aPluginElement,
+             uint32_t aPluginTagMimeIndex, const nsAString& aMimeType);
+  nsMimeType(nsPIDOMWindow* aWindow, const nsAString& aMimeType);
+  virtual ~nsMimeType();
+
+  nsPIDOMWindow* GetParentObject() const;
+  virtual JSObject* WrapObject(JSContext* aCx) MOZ_OVERRIDE;
+
+  const nsString& Type() const
+  {
+    return mType;
+  }
+
+  // MimeType WebIDL methods
+  void GetDescription(nsString& retval) const;
+  nsPluginElement *GetEnabledPlugin() const;
+  void GetSuffixes(nsString& retval) const;
+  void GetType(nsString& retval) const;
+
+protected:
+  nsCOMPtr<nsPIDOMWindow> mWindow;
+
+  // Strong reference to the active plugin, if any. Note that this
+  // creates an explicit reference cycle through the plugin element's
+  // mimetype array. We rely on the cycle collector to break this
+  // cycle.
+  nsRefPtr<nsPluginElement> mPluginElement;
+  uint32_t mPluginTagMimeIndex;
+  nsString mType;
+};
+
+#endif /* nsMimeTypeArray_h___ */