Add |legacy_destination_url| back to SessionMessage for EME

ppapi/proxy/ppb_instance_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_PPB_INSTANCE_PROXY_H_
 #define PPAPI_PROXY_PPB_INSTANCE_PROXY_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 126 matching lines @@
                                           uint32 promise_id,
                                           PP_Var web_session_id_var) override;
   virtual void PromiseRejected(PP_Instance instance,
                                uint32 promise_id,
                                PP_CdmExceptionCode exception_code,
                                uint32 system_code,
                                PP_Var error_description_var) override;
   virtual void SessionMessage(PP_Instance instance,
                               PP_Var web_session_id_var,
                               PP_CdmMessageType message_type,
-                              PP_Var message_var) override;
+                              PP_Var message_var,
+                              PP_Var legacy_destination_url_var) override;
   virtual void SessionKeysChange(
       PP_Instance instance,
       PP_Var web_session_id_var,
       PP_Bool has_additional_usable_key,
       uint32_t key_count,
       const struct PP_KeyInformation key_information[]) override;
   virtual void SessionExpirationChange(PP_Instance instance,
                                        PP_Var web_session_id_var,
                                        PP_Time new_expiry_time) override;
   virtual void SessionClosed(PP_Instance instance,
@@ skipping 108 matching lines @@
   virtual void OnHostMsgPromiseResolvedWithSession(
       PP_Instance instance,
       uint32_t promise_id,
       SerializedVarReceiveInput web_session_id);
   virtual void OnHostMsgPromiseRejected(
       PP_Instance instance,
       uint32_t promise_id,
       PP_CdmExceptionCode exception_code,
       uint32_t system_code,
       SerializedVarReceiveInput error_description);
-  virtual void OnHostMsgSessionMessage(PP_Instance instance,
-                                       SerializedVarReceiveInput web_session_id,
-                                       PP_CdmMessageType message_type,
-                                       SerializedVarReceiveInput message);
+  virtual void OnHostMsgSessionMessage(
+      PP_Instance instance,
+      SerializedVarReceiveInput web_session_id,
+      PP_CdmMessageType message_type,
+      SerializedVarReceiveInput message,
+      SerializedVarReceiveInput legacy_destination_url);
   virtual void OnHostMsgSessionKeysChange(
       PP_Instance instance,
       const std::string& web_session_id,
       PP_Bool has_additional_usable_key,
       const std::vector<PP_KeyInformation>& key_information);
   virtual void OnHostMsgSessionExpirationChange(
       PP_Instance instance,
       const std::string& web_session_id,
       PP_Time new_expiry_time);
   virtual void OnHostMsgSessionClosed(PP_Instance instance,
@@ skipping 36 matching lines @@
   // Other helpers.
   void CancelAnyPendingRequestSurroundingText(PP_Instance instance);
 
   ProxyCompletionCallbackFactory<PPB_Instance_Proxy> callback_factory_;
 };
 
 }  // namespace proxy
 }  // namespace ppapi
 
 #endif  // PPAPI_PROXY_PPB_INSTANCE_PROXY_H_