[Translate] Do not show TRANSLATING and AFTER_TRANSLATE when on a translate session

chrome/browser/translate/translate_infobar_delegate.h

 // 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.
 
 #ifndef CHROME_BROWSER_TRANSLATE_TRANSLATE_INFOBAR_DELEGATE_H_
 #define CHROME_BROWSER_TRANSLATE_TRANSLATE_INFOBAR_DELEGATE_H_
 
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 40 matching lines @@
   // types, |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
   // |infobar_type| == TRANSLATING and
   // |original_language| == kUnknownLanguageCode.
   //
   // If |replace_existing_infobar| is true, the infobar is created and added to
   // |infobar_service|, replacing any other translate infobar already present
   // there.  Otherwise, the infobar will only be added if there is no other
   // translate infobar already present.

[Peter Kasting, 2013/06/21 17:23:59]

Nit: Consider updating this comment to describe your new behavior.

   static void Create(InfoBarService* infobar_service,
                      bool replace_existing_infobar,
                      Type infobar_type,
                      TranslateErrors::Type error_type,
                      PrefService* prefs,
                      const ShortcutConfiguration& shortcut_config,
                      const std::string& original_language,
                      const std::string& target_language);
 
   // Returns the number of languages supported.
@@ skipping 69 matching lines @@
   // several times).
   void AlwaysTranslatePageLanguage();
   void NeverTranslatePageLanguage();
 
   // The following methods are called by the infobar that displays the status
   // while translating and also the one displaying the error message.
   string16 GetMessageInfoBarText();
   string16 GetMessageInfoBarButtonText();
   void MessageInfoBarButtonPressed();
   bool ShouldShowMessageInfoBarButton();
-  bool InTranslateNavigation();
 
   // Called by the before translate infobar to figure-out if it should show
   // an extra shortcut to let the user black-list/white-list that language
   // (based on how many times the user accepted/declined translation).
   // The shortcut itself is platform specific, it can be a button or a new bar
   // for example.
   bool ShouldShowNeverTranslateShortcut();
   bool ShouldShowAlwaysTranslateShortcut();
 
   // Sets this infobar background animation based on the previous infobar shown.
@@ skipping 76 matching lines @@
 
   // The translation related preferences.
   TranslatePrefs prefs_;
 
   // Translation shortcut configuration
   ShortcutConfiguration shortcut_config_;
   DISALLOW_COPY_AND_ASSIGN(TranslateInfoBarDelegate);
 };
 
 #endif  // CHROME_BROWSER_TRANSLATE_TRANSLATE_INFOBAR_DELEGATE_H_