Users stuck in fullscreen mode when running gnome-shell.

ui/base/x/x11_util.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.
 
 #ifndef UI_BASE_X_X11_UTIL_H_
 #define UI_BASE_X_X11_UTIL_H_
 #pragma once
 
 // This file declares utility functions for X11 (Linux only).
 //
@@ skipping 101 matching lines @@
 XID GetX11WindowFromGdkWindow(GdkWindow* window);
 
 // Get the GtkWindow* wrapping a given XID, if any.
 // Returns NULL if there isn't already a GtkWindow* wrapping this XID;
 // see gdk_window_foreign_new() etc. to wrap arbitrary XIDs.
 UI_EXPORT GtkWindow* GetGtkWindowFromX11Window(XID xid);
 
 // Get a Visual from the given widget. Since we don't include the Xlib
 // headers, this is returned as a void*.
 UI_EXPORT void* GetVisualFromGtkWidget(GtkWidget* widget);
+
+// Sets _GTK_HIDE_TITLEBAR_WHEN_MAXIMIZED on |window|.
+UI_EXPORT void SetHideTitlebarWhenMaximizedProperty(GdkWindow* window);

[Daniel Erat, 2012/05/21 21:37:10]

despite the atom's name, this isn't really GTK-specific, is it?  could you make
it take an X window instead?

[tony, 2012/05/21 21:47:31]

Done.

 #endif  // defined(TOOLKIT_GTK)
 
 // Return the number of bits-per-pixel for a pixmap of the given depth
 UI_EXPORT int BitsPerPixelForPixmapDepth(Display* display, int depth);
 
 // Returns true if |window| is visible.
 UI_EXPORT bool IsWindowVisible(XID window);
 
 // Returns the bounds of |window|.
 UI_EXPORT bool GetWindowRect(XID window, gfx::Rect* rect);
@@ skipping 155 matching lines @@
 
  private:
   char* string_;
 
   DISALLOW_COPY_AND_ASSIGN(XScopedString);
 };
 
 }  // namespace ui
 
 #endif  // UI_BASE_X_X11_UTIL_H_