Omnibox: Make InMemoryURLIndex respect hidden URLRows

components/omnibox/browser/history_quick_provider.cc

 // Copyright (c) 2012 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.
 
 #include "components/omnibox/browser/history_quick_provider.h"
 
 #include <stddef.h>
 
 #include <vector>
 
@@ skipping 218 matching lines @@
   // Set |inline_autocompletion| and |allowed_to_be_default_match| if possible.
   if (inline_autocomplete_offset != base::string16::npos) {
     // |inline_autocomplete_offset| may be beyond the end of the
     // |match.fill_into_edit| if the user has typed an URL with a scheme and the
     // last character typed is a slash.  That slash is removed by the
     // FormatURLWithAdjustments call above.
     if (inline_autocomplete_offset < match.fill_into_edit.length()) {
       match.inline_autocompletion =
           match.fill_into_edit.substr(inline_autocomplete_offset);
     }
-    match.allowed_to_be_default_match = match.inline_autocompletion.empty() ||
-        !PreventInlineAutocomplete(autocomplete_input_);
+    match.allowed_to_be_default_match =
+        match.typed_count > 0 &&
+        (match.inline_autocompletion.empty() ||
+         !PreventInlineAutocomplete(autocomplete_input_));
   }
   match.EnsureUWYTIsAllowedToBeDefault(autocomplete_input_,
                                        client()->GetTemplateURLService());
 
   // Format the description autocomplete presentation.
   match.description = info.title();
   match.description_class = SpansFromTermMatch(
       history_match.title_matches, match.description.length(), false);
 
   match.RecordAdditionalInfo("typed count", info.typed_count());
   match.RecordAdditionalInfo("visit count", info.visit_count());
   match.RecordAdditionalInfo("last visit", info.last_visit());
 
   return match;
 }