diff --git a/content/shared/public/nsLayoutAtoms.h b/content/shared/public/nsLayoutAtoms.h
new file mode 100644
index 00000000000..fb4e12f05ba
--- /dev/null
+++ b/content/shared/public/nsLayoutAtoms.h
@@ -0,0 +1,55 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * The contents of this file are subject to the Netscape Public License
+ * Version 1.0 (the "NPL"); you may not use this file except in
+ * compliance with the NPL.  You may obtain a copy of the NPL at
+ * http://www.mozilla.org/NPL/
+ *
+ * Software distributed under the NPL is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
+ * for the specific language governing rights and limitations under the
+ * NPL.
+ *
+ * The Initial Developer of this code under the NPL is Netscape
+ * Communications Corporation.  Portions created by Netscape are
+ * Copyright (C) 1998 Netscape Communications Corporation.  All Rights
+ * Reserved.
+ */
+#ifndef nsLayoutAtoms_h___
+#define nsLayoutAtoms_h___
+
+#include "nsIAtom.h"
+
+/**
+ * This class wraps up the creation (and destruction) of the standard
+ * set of atoms used during layout processing. These objects
+ * are created when the first presentation context is created and they
+ * are destroyed when the last presentation context object is destroyed.
+ */
+
+class nsLayoutAtoms {
+public:
+
+  static void AddrefAtoms();
+  static void ReleaseAtoms();
+
+  // Alphabetical list of atoms
+  static nsIAtom* all;
+  static nsIAtom* aural;
+
+  static nsIAtom* braille;
+
+  static nsIAtom* embossed;
+
+  static nsIAtom* handheld;
+
+  static nsIAtom* print;
+  static nsIAtom* projection;
+
+  static nsIAtom* screen;
+
+  static nsIAtom* tty;
+  static nsIAtom* tv;
+};
+
+#endif /* nsLayoutAtoms_h___ */
diff --git a/layout/base/nsLayoutAtoms.h b/layout/base/nsLayoutAtoms.h
new file mode 100644
index 00000000000..fb4e12f05ba
--- /dev/null
+++ b/layout/base/nsLayoutAtoms.h
@@ -0,0 +1,55 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * The contents of this file are subject to the Netscape Public License
+ * Version 1.0 (the "NPL"); you may not use this file except in
+ * compliance with the NPL.  You may obtain a copy of the NPL at
+ * http://www.mozilla.org/NPL/
+ *
+ * Software distributed under the NPL is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
+ * for the specific language governing rights and limitations under the
+ * NPL.
+ *
+ * The Initial Developer of this code under the NPL is Netscape
+ * Communications Corporation.  Portions created by Netscape are
+ * Copyright (C) 1998 Netscape Communications Corporation.  All Rights
+ * Reserved.
+ */
+#ifndef nsLayoutAtoms_h___
+#define nsLayoutAtoms_h___
+
+#include "nsIAtom.h"
+
+/**
+ * This class wraps up the creation (and destruction) of the standard
+ * set of atoms used during layout processing. These objects
+ * are created when the first presentation context is created and they
+ * are destroyed when the last presentation context object is destroyed.
+ */
+
+class nsLayoutAtoms {
+public:
+
+  static void AddrefAtoms();
+  static void ReleaseAtoms();
+
+  // Alphabetical list of atoms
+  static nsIAtom* all;
+  static nsIAtom* aural;
+
+  static nsIAtom* braille;
+
+  static nsIAtom* embossed;
+
+  static nsIAtom* handheld;
+
+  static nsIAtom* print;
+  static nsIAtom* projection;
+
+  static nsIAtom* screen;
+
+  static nsIAtom* tty;
+  static nsIAtom* tv;
+};
+
+#endif /* nsLayoutAtoms_h___ */
diff --git a/layout/base/public/nsLayoutAtoms.h b/layout/base/public/nsLayoutAtoms.h
new file mode 100644
index 00000000000..fb4e12f05ba
--- /dev/null
+++ b/layout/base/public/nsLayoutAtoms.h
@@ -0,0 +1,55 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * The contents of this file are subject to the Netscape Public License
+ * Version 1.0 (the "NPL"); you may not use this file except in
+ * compliance with the NPL.  You may obtain a copy of the NPL at
+ * http://www.mozilla.org/NPL/
+ *
+ * Software distributed under the NPL is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
+ * for the specific language governing rights and limitations under the
+ * NPL.
+ *
+ * The Initial Developer of this code under the NPL is Netscape
+ * Communications Corporation.  Portions created by Netscape are
+ * Copyright (C) 1998 Netscape Communications Corporation.  All Rights
+ * Reserved.
+ */
+#ifndef nsLayoutAtoms_h___
+#define nsLayoutAtoms_h___
+
+#include "nsIAtom.h"
+
+/**
+ * This class wraps up the creation (and destruction) of the standard
+ * set of atoms used during layout processing. These objects
+ * are created when the first presentation context is created and they
+ * are destroyed when the last presentation context object is destroyed.
+ */
+
+class nsLayoutAtoms {
+public:
+
+  static void AddrefAtoms();
+  static void ReleaseAtoms();
+
+  // Alphabetical list of atoms
+  static nsIAtom* all;
+  static nsIAtom* aural;
+
+  static nsIAtom* braille;
+
+  static nsIAtom* embossed;
+
+  static nsIAtom* handheld;
+
+  static nsIAtom* print;
+  static nsIAtom* projection;
+
+  static nsIAtom* screen;
+
+  static nsIAtom* tty;
+  static nsIAtom* tv;
+};
+
+#endif /* nsLayoutAtoms_h___ */