Delete the GTK+ port of Chrome.

chrome/browser/printing/printing_gtk_util.cc

-// Copyright 2014 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 "chrome/browser/printing/printing_gtk_util.h"
-
-#include <gtk/gtk.h>
-#include <gtk/gtkunixprint.h>
-
-#include "base/strings/string16.h"
-#include "base/strings/utf_string_conversions.h"
-#include "printing/print_settings.h"
-#include "printing/printing_context_linux.h"
-#include "printing/units.h"
-
-gfx::Size GetPdfPaperSizeDeviceUnitsGtk(
-    printing::PrintingContextLinux* context) {
-  GtkPageSetup* page_setup = gtk_page_setup_new();
-
-  gfx::SizeF paper_size(
-      gtk_page_setup_get_paper_width(page_setup, GTK_UNIT_INCH),
-      gtk_page_setup_get_paper_height(page_setup, GTK_UNIT_INCH));
-
-  g_object_unref(page_setup);
-
-  const printing::PrintSettings& settings = context->settings();
-
-  return gfx::Size(
-      paper_size.width() * settings.device_units_per_inch(),
-      paper_size.height() * settings.device_units_per_inch());
-}