Remove unused BackgroundAnimationType to simplify translate delegate.

components/translate/core/browser/translate_infobar_delegate.h

 // Copyright 2014 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 COMPONENTS_TRANSLATE_CORE_BROWSER_TRANSLATE_INFOBAR_DELEGATE_H_
 #define COMPONENTS_TRANSLATE_CORE_BROWSER_TRANSLATE_INFOBAR_DELEGATE_H_
 
 #include <stddef.h>
 
 #include <memory>
@@ skipping 19 matching lines @@
 namespace translate {
 
 // Feature flag for "Translate Compact Infobar UI" project.
 extern const base::Feature kTranslateCompactUI;
 
 class TranslateDriver;
 class TranslateManager;
 
 class TranslateInfoBarDelegate : public infobars::InfoBarDelegate {
  public:
-  // The types of background color animations.
-  enum BackgroundAnimationType {
-    NONE,
-    NORMAL_TO_ERROR,
-    ERROR_TO_NORMAL
-  };
-
   static const size_t kNoIndex;
 
   ~TranslateInfoBarDelegate() override;
 
   // Factory method to create a translate infobar.  |error_type| must be
   // specified iff |step| == TRANSLATION_ERROR.  For other translate steps,
   // |original_language| and |target_language| must be ASCII language codes
   // (e.g. "en", "fr", etc.) for languages the TranslateManager supports
   // translating.  The lone exception is when the user initiates translation
   // from the context menu, in which case it's legal to call this with
@@ skipping 60 matching lines @@
   bool is_error() const {
     return step_ == translate::TRANSLATE_STEP_TRANSLATE_ERROR;
   }
 
   // Return true if the translation was triggered by a menu entry instead of
   // via an infobar/bubble or preference.
   bool triggered_from_menu() const {
     return triggered_from_menu_;
   }
 
-  // Returns what kind of background fading effect the infobar should use when
-  // its is shown.
-  BackgroundAnimationType background_animation_type() const {
-    return background_animation_;
-  }
-
   virtual void Translate();
   virtual void RevertTranslation();
   void ReportLanguageDetectionError();
 
   // Called when the user declines to translate a page, by either closing the
   // infobar or pressing the "Don't translate" button.
   virtual void TranslationDeclined();
 
   // Methods called by the Options menu delegate.
   virtual bool IsTranslatableLanguageByPrefs();
@@ skipping 50 matching lines @@
 
   // Gets the TranslateDriver associated with this object.
   // May return NULL if the driver has been destroyed.
   TranslateDriver* GetTranslateDriver();
 
  protected:
   TranslateInfoBarDelegate(
       const base::WeakPtr<TranslateManager>& translate_manager,
       bool is_off_the_record,
       translate::TranslateStep step,
-      TranslateInfoBarDelegate* old_delegate,
       const std::string& original_language,
       const std::string& target_language,
       TranslateErrors::Type error_type,
       bool triggered_from_menu);
 
  private:
   friend class TranslationInfoBarTest;
   typedef std::pair<std::string, base::string16> LanguageNamePair;
 
   // InfoBarDelegate:
   Type GetInfoBarType() const override;
   infobars::InfoBarDelegate::InfoBarIdentifier GetIdentifier() const override;
   int GetIconId() const override;
   void InfoBarDismissed() override;
   TranslateInfoBarDelegate* AsTranslateInfoBarDelegate() override;
 
   bool is_off_the_record_;
   translate::TranslateStep step_;
 
-  // The type of fading animation if any that should be used when showing this
-  // infobar.
-  BackgroundAnimationType background_animation_;
-
   TranslateUIDelegate ui_delegate_;
   base::WeakPtr<TranslateManager> translate_manager_;
 
   // The error that occurred when trying to translate (NONE if no error).
   TranslateErrors::Type error_type_;
 
   // The translation related preferences.
   std::unique_ptr<TranslatePrefs> prefs_;
 
   // Whether the translation was triggered via a menu click vs automatically
   // (due to language detection, preferences...)
   bool triggered_from_menu_;
 
   DISALLOW_COPY_AND_ASSIGN(TranslateInfoBarDelegate);
 };
 
 }  // namespace translate
 
 #endif  // COMPONENTS_TRANSLATE_CORE_BROWSER_TRANSLATE_INFOBAR_DELEGATE_H_