GTK: Make the gtk port compile with GTK_DISABLE_SINGLE_INCLUDES.

printing/printing_context_gtk.cc

 // Copyright (c) 2011 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.
 
 #include "printing/printing_context_gtk.h"
 
 #include <gtk/gtk.h>
-#include <gtk/gtkprintunixdialog.h>
+#include <gtk/gtkunixprint.h>
 
 #include "base/logging.h"
 #include "base/values.h"
 #include "printing/metafile.h"
 #include "printing/print_dialog_gtk_interface.h"
 #include "printing/print_job_constants.h"
 #include "printing/units.h"
 
 namespace {
   // Function pointer for creating print dialogs. |callback| is only used when
@@ skipping 129 matching lines @@
   // Intentional No-op.
 }
 
 gfx::NativeDrawingContext PrintingContextGtk::context() const {
   // Intentional No-op.
   return NULL;
 }
 
 }  // namespace printing