Implement the 2016Q2 Translate UI designe spec out in

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 <utility>
 
 #include "chrome/browser/translate/chrome_translate_client.h"
 #include "components/translate/core/browser/language_state.h"
 #include "components/translate/core/browser/translate_ui_delegate.h"
 
 TranslateBubbleModelImpl::TranslateBubbleModelImpl(
     translate::TranslateStep step,
     std::unique_ptr<translate::TranslateUIDelegate> ui_delegate)
     : ui_delegate_(std::move(ui_delegate)),
       view_state_transition_(TranslateStepToViewState(step)),
       translation_declined_(false),
       translate_executed_(false) {
   if (GetViewState() != TranslateBubbleModel::VIEW_STATE_BEFORE_TRANSLATE)
     translate_executed_ = true;
 }
 
-TranslateBubbleModelImpl::~TranslateBubbleModelImpl() {
-}
+TranslateBubbleModelImpl::~TranslateBubbleModelImpl() {}
 
 // static
 TranslateBubbleModel::ViewState
 TranslateBubbleModelImpl::TranslateStepToViewState(
     translate::TranslateStep step) {
   switch (step) {
     case translate::TRANSLATE_STEP_BEFORE_TRANSLATE:
       return TranslateBubbleModel::VIEW_STATE_BEFORE_TRANSLATE;
     case translate::TRANSLATE_STEP_TRANSLATING:
       return TranslateBubbleModel::VIEW_STATE_TRANSLATING;
     case translate::TRANSLATE_STEP_AFTER_TRANSLATE:
       return TranslateBubbleModel::VIEW_STATE_AFTER_TRANSLATE;
     case translate::TRANSLATE_STEP_TRANSLATE_ERROR:
       return TranslateBubbleModel::VIEW_STATE_ERROR;
   }
 
   NOTREACHED();
   return TranslateBubbleModel::VIEW_STATE_ERROR;
 }
 
 TranslateBubbleModel::ViewState TranslateBubbleModelImpl::GetViewState() const {
   return view_state_transition_.view_state();
 }
 
+bool TranslateBubbleModelImpl::ShouldAlwaysTranslateBeCheckedByDefault() const {
+  return ui_delegate_->ShouldAlwaysTranslateBeCheckedByDefault();
+}
+
 void TranslateBubbleModelImpl::SetViewState(
     TranslateBubbleModel::ViewState view_state) {
   view_state_transition_.SetViewState(view_state);
 }
 
 void TranslateBubbleModelImpl::ShowError(
     translate::TranslateErrors::Type error_type) {
   ui_delegate_->OnErrorShown(error_type);
 }
 
@@ skipping 56 matching lines @@
 
 void TranslateBubbleModelImpl::OnBubbleClosing() {
   if (!translate_executed_)
     ui_delegate_->TranslationDeclined(translation_declined_);
 }
 
 bool TranslateBubbleModelImpl::IsPageTranslatedInCurrentLanguages() const {
   const translate::LanguageState& language_state =
       ui_delegate_->GetLanguageState();
   return ui_delegate_->GetOriginalLanguageCode() ==
-      language_state.original_language() &&
-      ui_delegate_->GetTargetLanguageCode() ==
-      language_state.current_language();
+             language_state.original_language() &&
+         ui_delegate_->GetTargetLanguageCode() ==
+             language_state.current_language();
 }