Update Comment by stripped_destination_url

components/omnibox/browser/autocomplete_match.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_OMNIBOX_BROWSER_AUTOCOMPLETE_MATCH_H_
 #define COMPONENTS_OMNIBOX_BROWSER_AUTOCOMPLETE_MATCH_H_
 
 #include <stddef.h>
 
 #include <map>
@@ skipping 328 matching lines @@
   // should only set this flag if ".com" will be inline autocompleted;
   // and a navigation to "foo/" (an intranet host) or search for "foo"
   // should set this flag.
   bool allowed_to_be_default_match;
 
   // The URL to actually load when the autocomplete item is selected. This URL
   // should be canonical so we can compare URLs with strcmp to avoid dupes.
   // It may be empty if there is no possible navigation.
   GURL destination_url;
 
-  // The destination URL with "www." stripped off for better dupe finding.
+  // The destination URL modified for better dupe finding.  The result may not
+  // be navigable or even valid; it's only meant to be used for detecting
+  // duplicates.
   GURL stripped_destination_url;
 
   // The main text displayed in the address bar dropdown.
   base::string16 contents;
   ACMatchClassifications contents_class;
 
   // Additional helper text for each entry, such as a title or description.
   base::string16 description;
   ACMatchClassifications description_class;
 
@@ skipping 68 matching lines @@
       const base::string16& text,
       const ACMatchClassifications& classifications) const;
 #endif
 };
 
 typedef AutocompleteMatch::ACMatchClassification ACMatchClassification;
 typedef std::vector<ACMatchClassification> ACMatchClassifications;
 typedef std::vector<AutocompleteMatch> ACMatches;
 
 #endif  // COMPONENTS_OMNIBOX_BROWSER_AUTOCOMPLETE_MATCH_H_