linux: Add support for undo in the omnibox.

third_party/undoview/undo_view.h

+// Copyright (c) 2010 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.
+
+// Boilerplate code was generated by http://burtonini.com/cgi/gobject.py
+
+#ifndef CHROME_BROWSER_AUTOCOMPLETE_UNDO_VIEW_H_
+#define CHROME_BROWSER_AUTOCOMPLETE_UNDO_VIEW_H_
+
+#include <gtk/gtk.h>
+#include "undo_manager.h"
+
+G_BEGIN_DECLS
+
+#define GTK_TYPE_UNDO_VIEW gtk_undo_view_get_type()
+
+#define GTK_UNDO_VIEW(obj) \
+  (G_TYPE_CHECK_INSTANCE_CAST((obj), GTK_TYPE_UNDO_VIEW, GtkUndoView))
+
+#define GTK_UNDO_VIEW_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_CAST((klass), GTK_TYPE_UNDO_VIEW, GtkUndoViewClass))
+
+#define GTK_IS_UNDO_VIEW(obj) \
+  (G_TYPE_CHECK_INSTANCE_TYPE((obj), GTK_TYPE_UNDO_VIEW))
+
+#define GTK_IS_UNDO_VIEW_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_TYPE((klass), GTK_TYPE_UNDO_VIEW))
+
+#define GTK_UNDO_VIEW_GET_CLASS(obj) \
+  (G_TYPE_INSTANCE_GET_CLASS((obj), GTK_TYPE_UNDO_VIEW, GtkUndoViewClass))
+
+typedef struct {
+  GtkTextView parent;
+  GtkSourceUndoManager *undo_manager_;
+} GtkUndoView;
+
+typedef struct {
+  GtkTextViewClass parent_class;
+
+  void (*undo)(GtkUndoView *);
+  void (*redo)(GtkUndoView *);
+} GtkUndoViewClass;
+
+GType gtk_undo_view_get_type(void);
+
+GtkWidget* gtk_undo_view_new(GtkTextBuffer *buffer);
+
+G_END_DECLS
+
+#endif  // CHROME_BROWSER_AUTOCOMPLETE_UNDO_VIEW_H_
+