Simplify the translate infobar code some.

chrome/browser/ui/gtk/infobars/after_translate_infobar_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 "chrome/browser/ui/gtk/infobars/after_translate_infobar_gtk.h"
 
 #include "base/bind.h"
 #include "base/message_loop.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/translate/translate_infobar_delegate.h"
@@ skipping 88 matching lines @@
       base::Bind(&AfterTranslateInfoBar::SetTargetLanguage,
                  weak_factory_.GetWeakPtr(),
                  index));
 }
 
 void AfterTranslateInfoBar::OnRevertPressed(GtkWidget* sender) {
   GetDelegate()->RevertTranslation();
 }
 
 void AfterTranslateInfoBar::SetOriginalLanguage(size_t language_index) {
-  GetDelegate()->SetOriginalLanguage(language_index);
+  GetDelegate()->set_original_language_index(language_index);
+  GetDelegate()->Translate();
 }
 
 void AfterTranslateInfoBar::SetTargetLanguage(size_t language_index) {
-  GetDelegate()->SetTargetLanguage(language_index);
+  GetDelegate()->set_target_language_index(language_index);
+  GetDelegate()->Translate();
 }