Start consolidating cross-port file selection code into ui/base/dialogs.

chrome/browser/ui/gtk/select_file_dialog_impl_gtk.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 <gtk/gtk.h>
 #include <map>
 #include <set>
 #include <vector>
 
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "base/message_loop.h"
 #include "base/string_util.h"
 #include "base/sys_string_conversions.h"
 #include "base/threading/thread.h"
 #include "base/threading/thread_restrictions.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/ui/gtk/select_file_dialog_impl.h"
 #include "chrome/browser/ui/select_file_dialog.h"
 #include "grit/generated_resources.h"
 #include "ui/base/gtk/gtk_signal.h"
 #include "ui/base/l10n/l10n_util.h"
 
 // Implementation of SelectFileDialog that shows a Gtk common dialog for
 // choosing a file or folder. This acts as a modal dialog.
 class SelectFileDialogImplGTK : public SelectFileDialogImpl {
  public:
-  explicit SelectFileDialogImplGTK(Listener* listener);
+  explicit SelectFileDialogImplGTK(Listener* listener,
+                                   ui::SelectFilePolicy* policy);
 
  protected:
   virtual ~SelectFileDialogImplGTK();
 
   // SelectFileDialog implementation.
   // |params| is user data we pass back via the Listener interface.
   virtual void SelectFileImpl(Type type,
                               const string16& title,
                               const FilePath& default_path,
                               const FileTypeInfo* file_types,
@@ skipping 86 matching lines @@
 
 // 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(
-    Listener* listener) {
-  return new SelectFileDialogImplGTK(listener);
+    Listener* listener, ui::SelectFilePolicy* policy) {
+  return new SelectFileDialogImplGTK(listener, policy);
 }
 
-SelectFileDialogImplGTK::SelectFileDialogImplGTK(Listener* listener)
-    : SelectFileDialogImpl(listener),
+SelectFileDialogImplGTK::SelectFileDialogImplGTK(Listener* listener,
+                                                 ui::SelectFilePolicy* policy)
+    : SelectFileDialogImpl(listener, policy),
       preview_(NULL) {
 }
 
 SelectFileDialogImplGTK::~SelectFileDialogImplGTK() {
   while (dialogs_.begin() != dialogs_.end()) {
     gtk_widget_destroy(*(dialogs_.begin()));
   }
 }
 
 bool SelectFileDialogImplGTK::HasMultipleFileTypeChoicesImpl() {
@@ skipping 386 matching lines @@
   GdkPixbuf* pixbuf = gdk_pixbuf_new_from_file_at_size(filename, kPreviewWidth,
                                                        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);
 }