Gtk3 ui: Add libgtk3ui as a separate build component

chrome/browser/ui/libgtkui/select_file_dialog_impl_gtk2.cc

 // 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.
 
-#include "chrome/browser/ui/libgtk2ui/select_file_dialog_impl_gtk2.h"
+#include "chrome/browser/ui/libgtkui/select_file_dialog_impl_gtk2.h"
 
 #include <gdk/gdkx.h>
 #include <gtk/gtk.h>
 #include <stddef.h>
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <unistd.h>
 
 #include <map>
 #include <memory>
 #include <set>
 #include <vector>
 
 // Xlib defines RootWindow
 #undef RootWindow
 
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/string_util.h"
 #include "base/strings/sys_string_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/threading/thread.h"
 #include "base/threading/thread_restrictions.h"
-#include "chrome/browser/ui/libgtk2ui/gtk2_signal.h"
-#include "chrome/browser/ui/libgtk2ui/gtk2_util.h"
-#include "chrome/browser/ui/libgtk2ui/select_file_dialog_impl.h"
+#include "chrome/browser/ui/libgtkui/gtk2_signal.h"
+#include "chrome/browser/ui/libgtkui/gtk2_util.h"
+#include "chrome/browser/ui/libgtkui/select_file_dialog_impl.h"
 #include "ui/aura/window_observer.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/events/platform/x11/x11_event_source.h"
 #include "ui/shell_dialogs/select_file_dialog.h"
 #include "ui/strings/grit/ui_strings.h"
 #include "ui/views/widget/desktop_aura/desktop_window_tree_host_x11.h"
 
 namespace {
 
 // Makes sure that .jpg also shows .JPG.
 gboolean FileFilterCaseInsensitive(const GtkFileFilterInfo* file_info,
                                    std::string* file_extension) {
   return base::EndsWith(file_info->filename, *file_extension,
                         base::CompareCase::INSENSITIVE_ASCII);
 }
 
 // Deletes |data| when gtk_file_filter_add_custom() is done with it.
 void OnFileFilterDataDestroyed(std::string* file_extension) {
   delete file_extension;
 }
 
 // Runs DesktopWindowTreeHostX11::EnableEventListening() when the file-picker
 // is closed.
 void OnFilePickerDestroy(base::Closure* callback) {
   callback->Run();
 }
 
 }  // namespace
 
-namespace libgtk2ui {
+namespace libgtkui {
 
 // The size of the preview we display for selected image files. We set height
 // larger than width because generally there is more free space vertically
 // than horiztonally (setting the preview image will alway expand the width of
 // the dialog, but usually not the height). The image's aspect ratio will always
 // be preserved.
 static const int kPreviewWidth = 256;
 static const int kPreviewHeight = 512;
 
 SelectFileDialogImpl* SelectFileDialogImpl::NewSelectFileDialogImplGTK(
@@ skipping 479 matching lines @@
                                                        kPreviewHeight, NULL);
   g_free(filename);
   if (pixbuf) {
     gtk_image_set_from_pixbuf(GTK_IMAGE(preview_), pixbuf);
     g_object_unref(pixbuf);
   }
   gtk_file_chooser_set_preview_widget_active(GTK_FILE_CHOOSER(chooser),
                                              pixbuf ? TRUE : FALSE);
 }
 
-}  // namespace libgtk2ui
+}  // namespace libgtkui