Rename EME WD call parameters

ppapi/thunk/ppb_instance_api.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_THUNK_INSTANCE_API_H_
 #define PPAPI_THUNK_INSTANCE_API_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "ppapi/c/dev/ppb_url_util_dev.h"
@@ skipping 125 matching lines @@
   virtual void ZoomChanged(PP_Instance instance, double factor) = 0;
   virtual void ZoomLimitsChanged(PP_Instance instance,
                                  double minimum_factor,
                                  double maximum_factor) = 0;
   // Testing and URLUtil.
   virtual PP_Var GetDocumentURL(PP_Instance instance,
                                 PP_URLComponents_Dev* components) = 0;
 #if !defined(OS_NACL)
   // Content Decryptor.
   virtual void SessionCreated(PP_Instance instance,
-                              uint32 reference_id,
-                              PP_Var session_id) = 0;
+                              uint32 session_id,
+                              PP_Var web_session_id) = 0;
   virtual void SessionMessage(PP_Instance instance,
-                              uint32 reference_id,
+                              uint32 session_id,
                               PP_Var message,
                               PP_Var destination_url) = 0;
-  virtual void SessionReady(PP_Instance instance, uint32 reference_id) = 0;
-  virtual void SessionClosed(PP_Instance instance, uint32 reference_id) = 0;
+  virtual void SessionReady(PP_Instance instance, uint32 session_id) = 0;
+  virtual void SessionClosed(PP_Instance instance, uint32 session_id) = 0;
   virtual void SessionError(PP_Instance instance,
-                            uint32 reference_id,
+                            uint32 session_id,
                             int32_t media_error,
                             int32_t system_error) = 0;
   virtual void DeliverBlock(PP_Instance instance,
                             PP_Resource decrypted_block,
                             const PP_DecryptedBlockInfo* block_info) = 0;
   virtual void DecoderInitializeDone(PP_Instance instance,
                                      PP_DecryptorStreamType decoder_type,
                                      uint32_t request_id,
                                      PP_Bool success) = 0;
   virtual void DecoderDeinitializeDone(PP_Instance instance,
@@ skipping 23 matching lines @@
                                       PP_URLComponents_Dev* components) = 0;
 #endif  // !defined(OS_NACL)
 
   static const ApiID kApiID = API_ID_PPB_INSTANCE;
 };
 
 }  // namespace thunk
 }  // namespace ppapi
 
 #endif  // PPAPI_THUNK_INSTANCE_API_H_