diff -r 000000000000 -r 6474c204b198 dom/plugins/base/nsJSNPRuntime.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/plugins/base/nsJSNPRuntime.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,89 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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 nsJSNPRuntime_h_
+#define nsJSNPRuntime_h_
+
+#include "nscore.h"
+#include "npapi.h"
+#include "npruntime.h"
+#include "pldhash.h"
+
+class nsJSNPRuntime
+{
+public:
+  static void OnPluginDestroy(NPP npp);
+};
+
+class nsJSObjWrapperKey
+{
+public:
+  nsJSObjWrapperKey(JSObject *obj, NPP npp)
+    : mJSObj(obj), mNpp(npp)
+  {
+  }
+
+  bool operator==(const nsJSObjWrapperKey& other) const {
+    return mJSObj == other.mJSObj && mNpp == other.mNpp;
+  }
+  bool operator!=(const nsJSObjWrapperKey& other) const {
+    return !(*this == other);
+  }
+
+  JSObject * mJSObj;
+  const NPP mNpp;
+};
+
+extern const JSClass sNPObjectJSWrapperClass;
+
+class nsJSObjWrapper : public NPObject
+{
+public:
+  JS::PersistentRooted<JSObject *> mJSObj;
+  const NPP mNpp;
+
+  static NPObject *GetNewOrUsed(NPP npp, JSContext *cx,
+                                JS::Handle<JSObject*> obj);
+
+protected:
+  nsJSObjWrapper(NPP npp);
+  ~nsJSObjWrapper();
+
+  static NPObject * NP_Allocate(NPP npp, NPClass *aClass);
+  static void NP_Deallocate(NPObject *obj);
+  static void NP_Invalidate(NPObject *obj);
+  static bool NP_HasMethod(NPObject *, NPIdentifier identifier);
+  static bool NP_Invoke(NPObject *obj, NPIdentifier method,
+                        const NPVariant *args, uint32_t argCount,
+                        NPVariant *result);
+  static bool NP_InvokeDefault(NPObject *obj, const NPVariant *args,
+                               uint32_t argCount, NPVariant *result);
+  static bool NP_HasProperty(NPObject * obj, NPIdentifier property);
+  static bool NP_GetProperty(NPObject *obj, NPIdentifier property,
+                             NPVariant *result);
+  static bool NP_SetProperty(NPObject *obj, NPIdentifier property,
+                             const NPVariant *value);
+  static bool NP_RemoveProperty(NPObject *obj, NPIdentifier property);
+  static bool NP_Enumerate(NPObject *npobj, NPIdentifier **identifier,
+                           uint32_t *count);
+  static bool NP_Construct(NPObject *obj, const NPVariant *args,
+                           uint32_t argCount, NPVariant *result);
+
+public:
+  static NPClass sJSObjWrapperNPClass;
+};
+
+class nsNPObjWrapper
+{
+public:
+  static void OnDestroy(NPObject *npobj);
+  static JSObject *GetNewOrUsed(NPP npp, JSContext *cx, NPObject *npobj);
+};
+
+bool
+JSValToNPVariant(NPP npp, JSContext *cx, JS::Value val, NPVariant *variant);
+
+
+#endif // nsJSNPRuntime_h_