content: Pass IOSurface references using Mach IPC.

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 <string>
 #include <vector>
 
 #include "base/memory/shared_memory.h"
 #include "base/tracked_objects.h"
 #include "base/values.h"
 #include "cc/resources/shared_bitmap_manager.h"
 #include "content/common/content_export.h"
 #include "content/common/host_discardable_shared_memory_manager.h"
 #include "ipc/ipc_message_macros.h"
 #include "ui/gfx/gpu_memory_buffer.h"
 
+#if defined(OS_MACOSX)
+#include "content/common/mac/io_surface_manager_token.h"
+#endif
+
 IPC_ENUM_TRAITS_MAX_VALUE(tracked_objects::ThreadData::Status,
                           tracked_objects::ThreadData::STATUS_LAST)
 
 IPC_STRUCT_TRAITS_BEGIN(tracked_objects::LocationSnapshot)
   IPC_STRUCT_TRAITS_MEMBER(file_name)
   IPC_STRUCT_TRAITS_MEMBER(function_name)
   IPC_STRUCT_TRAITS_MEMBER(line_number)
 IPC_STRUCT_TRAITS_END()
 
 IPC_STRUCT_TRAITS_BEGIN(tracked_objects::BirthOnThreadSnapshot)
@@ skipping 26 matching lines @@
   IPC_STRUCT_TRAITS_MEMBER(process_id)
 IPC_STRUCT_TRAITS_END()
 
 IPC_ENUM_TRAITS_MAX_VALUE(gfx::GpuMemoryBufferType,
                           gfx::GPU_MEMORY_BUFFER_TYPE_LAST)
 
 IPC_STRUCT_TRAITS_BEGIN(gfx::GpuMemoryBufferHandle)
   IPC_STRUCT_TRAITS_MEMBER(id)
   IPC_STRUCT_TRAITS_MEMBER(type)
   IPC_STRUCT_TRAITS_MEMBER(handle)
-#if defined(OS_MACOSX)
-  IPC_STRUCT_TRAITS_MEMBER(io_surface_id)
-#endif
 IPC_STRUCT_TRAITS_END()
 
 IPC_ENUM_TRAITS_MAX_VALUE(gfx::GpuMemoryBuffer::Format,
                           gfx::GpuMemoryBuffer::FORMAT_LAST)
 
 IPC_ENUM_TRAITS_MAX_VALUE(gfx::GpuMemoryBuffer::Usage,
                           gfx::GpuMemoryBuffer::USAGE_LAST)
 
 #undef IPC_MESSAGE_EXPORT
 #define IPC_MESSAGE_EXPORT CONTENT_EXPORT
@@ skipping 33 matching lines @@
 
 // Sent to child processes to tell them to enter or leave background mode.
 IPC_MESSAGE_CONTROL1(ChildProcessMsg_SetProcessBackgrounded,
                      bool /* background */)
 
 #if defined(USE_TCMALLOC)
 // Sent to child process to request tcmalloc stats.
 IPC_MESSAGE_CONTROL0(ChildProcessMsg_GetTcmallocStats)
 #endif
 
+#if defined(OS_MACOSX)
+// Sent to child processes to tell them what token to use when registering
+// and/or acquiring IOSurfaces.
+IPC_MESSAGE_CONTROL1(ChildProcessMsg_SetIOSurfaceManagerToken,
+                     content::IOSurfaceManagerToken /* token */)
+#endif
+
 ////////////////////////////////////////////////////////////////////////////////
 // Messages sent from the child process to the browser.
 
 IPC_MESSAGE_CONTROL0(ChildProcessHostMsg_ShutdownRequest)
 
 // Send back profiler data (ThreadData in tracked_objects).
 IPC_MESSAGE_CONTROL2(
     ChildProcessHostMsg_ChildProfilerData,
     int, /* sequence_number */
     tracked_objects::ProcessDataSnapshot /* process_data_snapshot */)
@@ skipping 67 matching lines @@
 IPC_SYNC_MESSAGE_CONTROL2_1(
     ChildProcessHostMsg_SyncAllocateLockedDiscardableSharedMemory,
     uint32 /* 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)