Enabled pressing TAB to cycle through the Omnibox results.

chrome/browser/ui/views/autocomplete/autocomplete_popup_contents_view.cc

Index: chrome/browser/ui/views/autocomplete/autocomplete_popup_contents_view.cc
===================================================================
--- chrome/browser/ui/views/autocomplete/autocomplete_popup_contents_view.cc	(revision 80868)
+++ chrome/browser/ui/views/autocomplete/autocomplete_popup_contents_view.cc	(working copy)
@@ -266,7 +266,12 @@
 }
 
 void AutocompletePopupContentsView::InvalidateLine(size_t line) {
-  GetChildViewAt(static_cast<int>(line))->SchedulePaint();
+  AutocompleteResultView* result_view =
+      static_cast<AutocompleteResultView*>(GetChildViewAt(
+      static_cast<int>(line)));
+
+  result_view->SetMatch(GetMatchAtIndex(line));
+  result_view->SchedulePaint();
 }
 
 void AutocompletePopupContentsView::UpdatePopupAppearance() {
@@ -301,7 +306,7 @@
       result_view = static_cast<AutocompleteResultView*>(GetChildViewAt(i));
       result_view->SetVisible(true);
     }
-    result_view->set_match(GetMatchAtIndex(i));
+    result_view->SetMatch(GetMatchAtIndex(i));
   }
   for (size_t i = model_->result().size(); i < child_rv_count; ++i)
     GetChildViewAt(i)->SetVisible(false);
@@ -623,9 +628,14 @@
   // OpenURL() may close the popup, which will clear the result set and, by
   // extension, |match| and its contents.  So copy the relevant strings out to
   // make sure they stay alive until the call completes.
+  string16 keyword;

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

Nit: Rewrite from here down as:

  const GURL url(match.destination_url);
  string16 keyword;
  if (match.keyword.get() && !match.keyword->is_keyword_hint)
    keyword = match.keyword->text;
  edit_view_->OpenURL(url, disposition, match.transition, GURL(), index,
                      keyword);

+  bool is_keyword_hint = false;
+
+  if (match.keyword.get()) {
+    keyword = match.keyword->text;
+    is_keyword_hint = match.keyword->is_keyword_hint;
+  }
   const GURL url(match.destination_url);
-  string16 keyword;
-  const bool is_keyword_hint = model_->GetKeywordForMatch(match, &keyword);
   edit_view_->OpenURL(url, disposition, match.transition, GURL(), index,
                       is_keyword_hint ? string16() : keyword);
 }