Hide experimental app list Google logo and custom launcher page when search engine is not Google.

ui/app_list/views/contents_view.h

Index: ui/app_list/views/contents_view.h
diff --git a/ui/app_list/views/contents_view.h b/ui/app_list/views/contents_view.h
index 55e55f1135af48336b1bc0a80590716a8ccbb4d3..89d8d6973f048f40ee96a7f9d1f2494f290ff429 100644
--- a/ui/app_list/views/contents_view.h
+++ b/ui/app_list/views/contents_view.h
@@ -148,9 +148,6 @@ class APP_LIST_EXPORT ContentsView : public views::View,
     return GetAnimatorForTransition(from_page, to_page, reverse);
   }
 
-  // Determines whether the custom page clickzone widget should be displayed.
-  bool ShouldShowCustomPageClickzone() const;
-
   // Performs the 'back' action for the active page. Returns whether the action
   // was handled.
   bool Back();