Translate: do not show the context menu entry when the feature is disabled

components/translate/core/browser/translate_prefs.h

Index: components/translate/core/browser/translate_prefs.h
diff --git a/components/translate/core/browser/translate_prefs.h b/components/translate/core/browser/translate_prefs.h
index ada3725d4f9d683a1bf7a06e3d5ef50a88b62585..61a35d83a83cb4f59b4bfcd6fb3defc5a5a3e41e 100644
--- a/components/translate/core/browser/translate_prefs.h
+++ b/components/translate/core/browser/translate_prefs.h
@@ -94,6 +94,9 @@ class TranslatePrefs {
                  const char* accept_languages_pref,
                  const char* preferred_languages_pref);
 
+  // Checks if the translate feature is enabled.
+  bool IsEnabled() const;
+
   // Sets the country that the application is run in. Determined by the
   // VariationsService, can be left empty. Used by TranslateExperiment.
   void SetCountry(const std::string& country);