[Translate] Expose whether the user is within a navigation session as part of the infobar delegate

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 120 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 button to let the user black-list/white-list that language (based
   // on how many times the user accepted/declined translation).
   bool ShouldShowNeverTranslateButton();
   bool ShouldShowAlwaysTranslateButton();
 
   // Sets this infobar background animation based on the previous infobar shown.
   // A fading background effect is used when transitioning from a normal state
   // to an error state (and vice-versa).
@@ skipping 65 matching lines @@
   // The error that occurred when trying to translate (NONE if no error).
   TranslateErrors::Type error_type_;
 
   // The translation related preferences.
   TranslatePrefs prefs_;
 
   DISALLOW_COPY_AND_ASSIGN(TranslateInfoBarDelegate);
 };
 
 #endif  // CHROME_BROWSER_TRANSLATE_TRANSLATE_INFOBAR_DELEGATE_H_