Translate new UX: Fix the visual and behavior of 'Done' button

chrome/browser/ui/translate/translate_bubble_model_impl.cc

 // Copyright 2013 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/translate/translate_bubble_model_impl.h"
 
+#include "chrome/browser/tab_contents/language_state.h"
+#include "chrome/browser/translate/translate_tab_helper.h"
 #include "chrome/browser/translate/translate_ui_delegate.h"
 
 TranslateBubbleModelImpl::TranslateBubbleModelImpl(
     TranslateBubbleModel::ViewState view_type,
     scoped_ptr<TranslateUIDelegate> ui_delegate)
     : ui_delegate_(ui_delegate.Pass()),
       view_state_transition_(view_type) {
 }
 
 TranslateBubbleModelImpl::~TranslateBubbleModelImpl() {
@@ skipping 56 matching lines @@
   ui_delegate_->Translate();
 }
 
 void TranslateBubbleModelImpl::RevertTranslation() {
   ui_delegate_->RevertTranslation();
 }
 
 void TranslateBubbleModelImpl::TranslationDeclined() {
   ui_delegate_->TranslationDeclined();
 }
+
+bool TranslateBubbleModelImpl::IsPageTranslatedInCurrentLanguages() const {
+  content::WebContents* web_contents = ui_delegate_->web_contents();
+  TranslateTabHelper* translate_tab_helper =
+      TranslateTabHelper::FromWebContents(web_contents);
+  LanguageState& language_state = translate_tab_helper->language_state();
+  return ui_delegate_->GetOriginalLanguageCode() ==
+      language_state.original_language() &&
+      ui_delegate_->GetTargetLanguageCode() ==
+      language_state.current_language();
+}