text: // Copyright 2019 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 CONTENT_COMMON_UNFREEZABLE_FRAME_MESSAGES_H_
  #define CONTENT_COMMON_UNFREEZABLE_FRAME_MESSAGES_H_
  
  #include "ipc/ipc_message_macros.h"
  
  // IPC messages for frames which should be executed and not be frozen even when
  // the frame is frozen.
  // Currently most IPC messages to the renderer are executed on freezable
  // per-frame task runners, but messages in this class will be handled as an
  // exception and will be posted on an unfreezable task runner and will be
  // guaranteed to run regardless of the frame's status.
  // These messages are primarily intended to support bfcache functionality.
  
  #undef IPC_MESSAGE_EXPORT
  #define IPC_MESSAGE_EXPORT CONTENT_EXPORT
  
  #define IPC_MESSAGE_START UnfreezableFrameMsgStart
  
  // Unload this RenderFrame and potentially replace it by a RenderFrameProxy, so
  // the frame can navigate to a document rendered by a different process.
  IPC_MESSAGE_ROUTED3(UnfreezableFrameMsg_Unload,
                      int /* proxy_routing_id */,
                      bool /* is_loading */,
                      content::FrameReplicationState /* replication_state */)
  
  // Instructs the renderer to delete the RenderFrame.
  IPC_MESSAGE_ROUTED1(UnfreezableFrameMsg_Delete, content::FrameDeleteIntention)
  
  // Requests the corresponding RenderFrameProxy to be deleted and removed from
  // the frame tree.
  IPC_MESSAGE_ROUTED0(UnfreezableFrameMsg_DeleteProxy)
  
  #endif  // CONTENT_COMMON_UNFREEZABLE_FRAME_MESSAGES_H_
  