Enabled pressing TAB to cycle through the Omnibox results.

chrome/browser/autocomplete/keyword_provider.cc

Index: chrome/browser/autocomplete/keyword_provider.cc
===================================================================
--- chrome/browser/autocomplete/keyword_provider.cc	(revision 80868)
+++ chrome/browser/autocomplete/keyword_provider.cc	(working copy)
@@ -179,11 +179,12 @@
                               !remaining_input.empty(),
                               &keyword_matches);
 
-  // Prune any extension keywords that are disallowed in incognito mode (if
-  // we're incognito), or disabled.
   for (std::vector<string16>::iterator i(keyword_matches.begin());
        i != keyword_matches.end(); ) {
     const TemplateURL* template_url(model->GetTemplateURLForKeyword(*i));
+
+    // Prune any extension keywords that are disallowed in incognito mode (if
+    // we're incognito), or disabled.
     if (profile_ &&
         input.matches_requested() == AutocompleteInput::ALL_MATCHES &&
         template_url->IsExtensionKeyword()) {
@@ -198,6 +199,13 @@
         continue;
       }
     }
+
+    // Prune any substituting keywords if there is no substitution.
+    if (TemplateURL::SupportsReplacement(template_url) &&
+        !input.allow_exact_keyword_match()) {
+      i = keyword_matches.erase(i);
+      continue;
+    }
     ++i;

[Peter Kasting, 2011/04/11 23:17:33]

Nit: Add blank line before this

   }
   if (keyword_matches.empty())