Re-land r109086: Add private Pepper API for dealing with PP_Flash_NetAddress.

ppapi/shared_impl/private/flash_net_address_impl.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_SHARED_IMPL_PRIVATE_FLASH_NET_ADDRESS_IMPL_H_
+#define PPAPI_SHARED_IMPL_PRIVATE_FLASH_NET_ADDRESS_IMPL_H_
+
+#include "base/basictypes.h"
+#include "ppapi/shared_impl/ppapi_shared_export.h"
+
+struct PP_Flash_NetAddress;
+
+namespace ppapi {
+
+class PPAPI_SHARED_EXPORT FlashNetAddressImpl {
+ public:
+  static bool ValidateNetAddress(const PP_Flash_NetAddress& addr);
+
+ private:
+  DISALLOW_IMPLICIT_CONSTRUCTORS(FlashNetAddressImpl);
+};
+
+}  // namespace ppapi
+
+#endif  // PPAPI_SHARED_IMPL_PRIVATE_FLASH_NET_ADDRESS_IMPL_H_