Adds functionality to pack an extension / app from the app.

chrome/browser/extensions/api/developer_private/entry_picker.h

Index: chrome/browser/extensions/api/developer_private/entry_picker.h
diff --git a/chrome/browser/extensions/api/developer_private/entry_picker.h b/chrome/browser/extensions/api/developer_private/entry_picker.h
index 91aa3a98f3a71d3bd1c4332cab8a7d4c11d44c54..5da9ba13dc8b5b7c2c2693e55cf62d677481df94 100644
--- a/chrome/browser/extensions/api/developer_private/entry_picker.h
+++ b/chrome/browser/extensions/api/developer_private/entry_picker.h
@@ -28,8 +28,10 @@ class EntryPicker : public ui::SelectFileDialog::Listener {
   EntryPicker(EntryPickerClient* client,
               content::WebContents* web_contents,
               ui::SelectFileDialog::Type picker_type,
-              const base::FilePath& last_directory,
-              const string16& select_title);
+              const FilePath& last_directory,
+              const string16& select_title,
+              const ui::SelectFileDialog::FileTypeInfo& info,
+              int file_type_index);
 
   // Allow picker UI to be skipped in testing.
   static void SkipPickerAndAlwaysSelectPathForTest(base::FilePath* path);