ozone: ClientPixmapManager passes VGEM fd from browser to renderer.

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>
 
@@ skipping 107 matching lines @@
 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
 
+#if defined(USE_OZONE)
+// Sent VGEM file descriptor to child processes to use when importing
+// ClientNativePixmap.
+IPC_MESSAGE_CONTROL1(ChildProcessMsg_SetVgemFD,

[spang, 2015/08/17 18:03:41]

Maybe:

ChildProcessMsg_InitializeClientNativePixmapFactory

[dshwang, 2015/08/18 14:14:39]

Done.

+                     base::FileDescriptor /* vgem_fd */)
+#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)