Add NetworkList/NetworkMonitor hooks and C++ wrappers.

ppapi/thunk/ppb_network_monitor_private_api.h

Index: ppapi/thunk/ppb_network_monitor_private_api.h
diff --git a/ppapi/thunk/ppb_network_monitor_private_api.h b/ppapi/thunk/ppb_network_monitor_private_api.h
new file mode 100644
index 0000000000000000000000000000000000000000..124f6446c2205ccdb6ddb641ebbbc4c6cc1956a0
--- /dev/null
+++ b/ppapi/thunk/ppb_network_monitor_private_api.h
@@ -0,0 +1,22 @@
+// Copyright (c) 2012 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_THUNK_PPB_NETWORK_MONITOR_PRIVATE_API_H_
+#define PPAPI_THUNK_PPB_NETWORK_MONITOR_PRIVATE_API_H_
+
+#include "ppapi/c/private/ppb_network_monitor_private.h"
+#include "ppapi/thunk/ppapi_thunk_export.h"
+
+namespace ppapi {
+namespace thunk {
+
+class PPAPI_THUNK_EXPORT PPB_NetworkMonitor_Private_API {
+ public:
+  virtual ~PPB_NetworkMonitor_Private_API() {}
+};
+
+}  // namespace thunk
+}  // namespace ppapi
+
+#endif  // PPAPI_THUNK_PPB_NETWORK_MONITOR_PRIVATE_API_H_