ozone: ClientPixmapManager passes VGEM fd from browser to renderer.

content/child/child_client_native_pixmap_factory_message_filter_ozone.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.
+
+#ifndef CONTENT_CHILD_CHILD_CLIENT_NATIVE_PIXMAP_FACTORY_MESSAGE_FILTER_OZONE_H_
+#define CONTENT_CHILD_CHILD_CLIENT_NATIVE_PIXMAP_FACTORY_MESSAGE_FILTER_OZONE_H_
+
+#include "base/file_descriptor_posix.h"
+#include "ipc/message_filter.h"
+
+namespace content {
+
+// Receives database messages from the browser process and processes them on the
+// IO thread.
+class ChildClientNativePixmapFactoryMessageFilter : public IPC::MessageFilter {
+ public:
+  ChildClientNativePixmapFactoryMessageFilter();
+  ~ChildClientNativePixmapFactoryMessageFilter() override;
+
+  void OnSetVirtualDevice(const base::FileDescriptor& virtual_device);
+
+  // IPC::MessageFilter
+  bool OnMessageReceived(const IPC::Message& message) override;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(ChildClientNativePixmapFactoryMessageFilter);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_CHILD_CHILD_CLIENT_NATIVE_PIXMAP_FACTORY_MESSAGE_FILTER_OZONE_H_