Implement the 2016Q2 Translate UI designe spec out in

chrome/browser/ui/translate/translate_bubble_model_impl.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_TRANSLATE_TRANSLATE_BUBBLE_MODEL_IMPL_H_
 #define CHROME_BROWSER_UI_TRANSLATE_TRANSLATE_BUBBLE_MODEL_IMPL_H_
 
 #include <memory>
 
 #include "base/macros.h"
@@ skipping 13 matching lines @@
       std::unique_ptr<translate::TranslateUIDelegate> ui_delegate);
   ~TranslateBubbleModelImpl() override;
 
   // Converts a TranslateStep to a ViewState.
   // This function never returns VIEW_STATE_ADVANCED.
   static TranslateBubbleModel::ViewState TranslateStepToViewState(
       translate::TranslateStep step);
 
   // TranslateBubbleModel methods.
   TranslateBubbleModel::ViewState GetViewState() const override;
+  bool GetAlwaysTranslateChecked() const override;

[msw, 2016/04/29 20:00:00]

nit: reorder override to match reordering in base class.

[ftang, 2016/04/29 22:37:00]

Done.

   void SetViewState(TranslateBubbleModel::ViewState view_state) override;
   void ShowError(translate::TranslateErrors::Type error_type) override;
   void GoBackFromAdvanced() override;
   int GetNumberOfLanguages() const override;
   base::string16 GetLanguageNameAt(int index) const override;
   int GetOriginalLanguageIndex() const override;
   void UpdateOriginalLanguageIndex(int index) override;
   int GetTargetLanguageIndex() const override;
   void UpdateTargetLanguageIndex(int index) override;
   void DeclineTranslation() override;
@@ skipping 10 matching lines @@
   std::unique_ptr<translate::TranslateUIDelegate> ui_delegate_;
   TranslateBubbleViewStateTransition view_state_transition_;
 
   bool translation_declined_;
   bool translate_executed_;
 
   DISALLOW_COPY_AND_ASSIGN(TranslateBubbleModelImpl);
 };
 
 #endif  // CHROME_BROWSER_UI_TRANSLATE_TRANSLATE_BUBBLE_MODEL_IMPL_H_