Resize synchronization for Linux.

gfx/gtk_preserve_window.h

 // Copyright (c) 2009 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 GFX_GTK_PRESERVE_WINDOW_H_
 #define GFX_GTK_PRESERVE_WINDOW_H_
 #pragma once
 
 #include <gdk/gdk.h>
 #include <gtk/gtk.h>
@@ skipping 35 matching lines @@
 
 GType gtk_preserve_window_get_type() G_GNUC_CONST;
 GtkWidget* gtk_preserve_window_new();
 
 // Whether or not we should preserve associated windows as the widget
 // is realized or unrealized.
 gboolean gtk_preserve_window_get_preserve(GtkPreserveWindow* widget);
 void gtk_preserve_window_set_preserve(GtkPreserveWindow* widget,
                                       gboolean value);
 
+// Whether or not someone else will gdk_window_resize the GdkWindow associated
+// with this widget (needed by the GPU process to synchronize resizing
+// with swapped between front and back buffer).
+void gtk_preserve_window_delegate_resize(GtkPreserveWindow* widget,
+                                         gboolean delegate);
+
 G_END_DECLS
 
 #endif  // GFX_GTK_PRESERVE_WINDOW_H_