Add PPAPI decryptor implementation.

ppapi/proxy/ppp_content_decryptor_private_proxy.h

+// 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_PROXY_PPP_CONTENT_DECRYPTOR_PRIVATE_PROXY_H_
+#define PPAPI_PROXY_PPP_CONTENT_DECRYPTOR_PRIVATE_PROXY_H_
+
+#include "ppapi/c/pp_instance.h"
+#include "ppapi/c/private/ppp_content_decryptor_private.h"
+#include "ppapi/proxy/interface_proxy.h"
+#include "ppapi/proxy/serialized_structs.h"
+#include "ppapi/shared_impl/host_resource.h"
+
+namespace ppapi {
+namespace proxy {
+
+class SerializedVarReceiveInput;
+
+class PPP_ContentDecryptor_Private_Proxy : public InterfaceProxy {
+ public:
+  explicit PPP_ContentDecryptor_Private_Proxy(Dispatcher* dispatcher);
+  virtual ~PPP_ContentDecryptor_Private_Proxy();
+
+  static const PPP_ContentDecryptor_Private* GetProxyInterface();
+
+ private:
+  // InterfaceProxy implementation.
+  virtual bool OnMessageReceived(const IPC::Message& msg);
+
+  // Message handlers.
+  void OnMsgGenerateKeyRequest(PP_Instance instance,
+                               SerializedVarReceiveInput key_system,
+                               SerializedVarReceiveInput init_data);
+  void OnMsgAddKey(PP_Instance instance,
+                   SerializedVarReceiveInput session_id,
+                   SerializedVarReceiveInput key);
+  void OnMsgCancelKeyRequest(PP_Instance instance,
+                             SerializedVarReceiveInput session_id);
+  void OnMsgDecrypt(PP_Instance instance,
+                    const PPPDecryptor_Buffer& encrypted_buffer,
+                    int32_t request_id);
+  void OnMsgDecryptAndDecode(PP_Instance instance,
+                             const HostResource& encrypted_block,
+                             int32_t request_id);
+
+  const PPP_ContentDecryptor_Private* ppp_decryptor_impl_;
+
+  DISALLOW_COPY_AND_ASSIGN(PPP_ContentDecryptor_Private_Proxy);
+};
+
+}  // namespace proxy
+}  // namespace ppapi
+
+#endif  // PPAPI_PROXY_PPP_CONTENT_DECRYPTOR_PRIVATE_PROXY_H_