Revert of ppapi: PPB_VpnProvider: Implement Resource Host

ppapi/shared_impl/vpn_provider_util.h

 // Copyright 2016 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_SHAERD_IMPL_VPN_PROVIDER_UTIL_H_
 #define PPAPI_SHAERD_IMPL_VPN_PROVIDER_UTIL_H_
 
 #include <memory>
 
 #include "base/memory/shared_memory.h"
 #include "ppapi/shared_impl/ppapi_shared_export.h"
 
 namespace ppapi {
 
 class PPAPI_SHARED_EXPORT VpnProviderSharedBuffer {
  public:
   VpnProviderSharedBuffer(uint32_t capacity,
                           uint32_t packet_size,
                           std::unique_ptr<base::SharedMemory> shm);
   ~VpnProviderSharedBuffer();
 
   bool GetAvailable(uint32_t* id);
   void SetAvailable(uint32_t id, bool value);
   void* GetBuffer(uint32_t id);
   base::SharedMemoryHandle GetHandle();
-  uint32_t max_packet_size() { return max_packet_size_; }
 
  private:
   uint32_t capacity_;
-  uint32_t max_packet_size_;
+  uint32_t packet_size_;
   std::unique_ptr<base::SharedMemory> shm_;
   std::vector<bool> available_;
-
-  DISALLOW_COPY_AND_ASSIGN(VpnProviderSharedBuffer);
 };
 
 }  // namespace ppapi
 
-#endif  // PPAPI_SHAERD_IMPL_VPN_PROVIDER_UTIL_H_
+#endif  // PPAPI_SHAERD_IMPL_VPN_PROVIDER_UTIL_H_