Modify the PPAPI CDM interface to pass more info.

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 <string>
+
 #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);
+                   SerializedVarReceiveInput key,
+                   SerializedVarReceiveInput init_data);
   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 std::string& serialized_encrypted_block_info);
+  void OnMsgDecryptAndDecode(
+      PP_Instance instance,
+      const PPPDecryptor_Buffer& encrypted_buffer,
+      const std::string& serialized_encrypted_block_info);
 
   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_