1 files changed, 37 insertions, 0 deletions
diff --git a/dom/media/gmp/GMPCrashHelper.h b/dom/media/gmp/GMPCrashHelper.h
new file mode 100644
index 0000000000..0034d54ee7
--- /dev/null
+++ b/dom/media/gmp/GMPCrashHelper.h
@@ -0,0 +1,37 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* 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/. */
+
+#if !defined(GMPCrashHelper_h_)
+#  define GMPCrashHelper_h_
+
+#  include "MainThreadUtils.h"
+#  include "nsISupportsImpl.h"
+
+class nsPIDOMWindowInner;
+
+namespace mozilla {
+
+// For every GMP actor requested, the caller can specify a crash helper,
+// which is an object which supplies the nsPIDOMWindowInner to which we'll
+// dispatch the PluginCrashed event if the GMP crashes.
+// GMPCrashHelper has threadsafe refcounting. Its release method ensures
+// that instances are destroyed on the main thread.
+class GMPCrashHelper {
+ public:
+  NS_INLINE_DECL_THREADSAFE_REFCOUNTING_WITH_DELETE_ON_MAIN_THREAD(
+      GMPCrashHelper);
+
+  // Called on the main thread.
+  virtual already_AddRefed<nsPIDOMWindowInner>
+  GetPluginCrashedEventTarget() = 0;
+
+ protected:
+  virtual ~GMPCrashHelper() { MOZ_ASSERT(NS_IsMainThread()); }
+};
+
+}  // namespace mozilla
+
+#endif  // GMPCrashHelper_h_