base: Move renderer threads to the appropriate cpuset.

content/common/child_process_messages.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.
 
 // Common IPC messages used for child processes.
 // Multiply-included message file, hence no include guard.
 
 #include <stdint.h>
 
 #include <string>
 #include <vector>
 
 #include "base/memory/shared_memory.h"
+#include "base/threading/platform_thread.h"
 #include "base/tracked_objects.h"
 #include "base/values.h"
 #include "build/build_config.h"
 #include "cc/resources/shared_bitmap_manager.h"
 #include "content/common/content_export.h"
 #include "content/common/content_param_traits_macros.h"
 #include "content/common/host_discardable_shared_memory_manager.h"
 #include "gpu/command_buffer/common/sync_token.h"
 #include "gpu/ipc/common/gpu_param_traits_macros.h"
 #include "ipc/ipc_channel_handle.h"
@@ skipping 35 matching lines @@
 
 IPC_STRUCT_TRAITS_BEGIN(tracked_objects::ProcessDataPhaseSnapshot)
   IPC_STRUCT_TRAITS_MEMBER(tasks)
 IPC_STRUCT_TRAITS_END()
 
 IPC_STRUCT_TRAITS_BEGIN(tracked_objects::ProcessDataSnapshot)
   IPC_STRUCT_TRAITS_MEMBER(phased_snapshots)
   IPC_STRUCT_TRAITS_MEMBER(process_id)
 IPC_STRUCT_TRAITS_END()
 
+IPC_ENUM_TRAITS_MAX_VALUE(base::ThreadPriority,
+                          base::ThreadPriority::REALTIME_AUDIO)
+
 #undef IPC_MESSAGE_EXPORT
 #define IPC_MESSAGE_EXPORT CONTENT_EXPORT
 
 #define IPC_MESSAGE_START ChildProcessMsgStart
 
 // Messages sent from the browser to the child process.
 
 // Sent in response to ChildProcessHostMsg_ShutdownRequest to tell the child
 // process that it's safe to shutdown.
 IPC_MESSAGE_CONTROL0(ChildProcessMsg_Shutdown)
@@ skipping 125 matching lines @@
 IPC_SYNC_MESSAGE_CONTROL2_1(
     ChildProcessHostMsg_SyncAllocateLockedDiscardableSharedMemory,
     uint32_t /* size */,
     content::DiscardableSharedMemoryId,
     base::SharedMemoryHandle)
 
 // Informs the browser that the child deleted a block of discardable shared
 // memory.
 IPC_MESSAGE_CONTROL1(ChildProcessHostMsg_DeletedDiscardableSharedMemory,
                      content::DiscardableSharedMemoryId)
+
+// Asks the browser to change the affinity of thread based on priority.
+IPC_MESSAGE_CONTROL2(ChildProcessHostMsg_SetThreadAffinity,
+                     base::PlatformThreadId,
+                     base::ThreadPriority)