Mojify demuxers and allow running {Chunk/FFmpeg}Demuxer in a Utility Process

content/common/memory_messages.h

 // Copyright 2015 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.
 
 // This file contains IPC messages for controlling memory pressure handling
 // in child processes for the purposes of enforcing consistent conditions
 // across memory measurements.
 
 // Multiply-included message header, no traditional include guard.
 
 #include "base/memory/memory_pressure_listener.h"
 #include "ipc/ipc_message_macros.h"
 #include "content/common/content_export.h"
 
 #undef IPC_MESSAGE_EXPORT
 #define IPC_MESSAGE_EXPORT CONTENT_EXPORT
 
 #define IPC_MESSAGE_START MemoryMsgStart
 
-IPC_ENUM_TRAITS_VALIDATE(
-    base::MemoryPressureListener::MemoryPressureLevel,
-    (value == base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_MODERATE ||
-     value == base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_CRITICAL))
-
 // Sent to all child processes to enable/disable suppressing memory pressure
 // notifications.
 IPC_MESSAGE_CONTROL1(MemoryMsg_SetPressureNotificationsSuppressed,
                      bool /* suppressed */)
 
 // Sent to all child processes to simulate a memory pressure notification.
 IPC_MESSAGE_CONTROL1(
     MemoryMsg_SimulatePressureNotification,
     base::MemoryPressureListener::MemoryPressureLevel /* level */)
 
 // Sent by the browser to all child processes to indicate an actual memory
 // pressure notification.
 IPC_MESSAGE_CONTROL1(
     MemoryMsg_PressureNotification,
     base::MemoryPressureListener::MemoryPressureLevel /* level */)