Implement basic crash detection and shutdown handling for out of process PPAP...

ppapi/c/private/ppb_proxy_private.h

+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef PPAPI_C_PRIVATE_PROXY_PRIVATE_H_
+#define PPAPI_C_PRIVATE_PROXY_PRIVATE_H_
+
+#include "ppapi/c/pp_module.h"
+
+#define PPB_PROXY_PRIVATE_INTERFACE "PPB_Proxy_Private;1"
+
+// Exposes functions needed by the out-of-process proxy to call into the
+// renderer PPAPI implementation.
+struct PPB_Proxy_Private {
+  // Called when the given plugin process has crashed.
+  void (*PluginCrashed)(PP_Module module);
+};
+
+#endif  // PPAPI_C_PRIVATE_PROXY_PRIVATE_H_