Enabled pressing TAB to traverse through the Omnibox results

chrome/browser/ui/cocoa/omnibox/omnibox_popup_view_mac.mm

Index: chrome/browser/ui/cocoa/omnibox/omnibox_popup_view_mac.mm
diff --git a/chrome/browser/ui/cocoa/omnibox/omnibox_popup_view_mac.mm b/chrome/browser/ui/cocoa/omnibox/omnibox_popup_view_mac.mm
index bc6dfc63f6cf87aaf30b696b921806e64d274190..1a878efb2c9ec5d3257984d7a81fbe658ddb57dc 100644
--- a/chrome/browser/ui/cocoa/omnibox/omnibox_popup_view_mac.mm
+++ b/chrome/browser/ui/cocoa/omnibox/omnibox_popup_view_mac.mm
@@ -548,10 +548,8 @@ void OmniboxPopupViewMac::OpenURLForRow(int row, bool force_background) {
   // relevant match out to make sure it stays alive until the call
   // completes.
   AutocompleteMatch match = model_->result().match_at(row);
-  string16 keyword;
-  const bool is_keyword_hint = model_->GetKeywordForMatch(match, &keyword);
   omnibox_view_->OpenMatch(match, disposition, GURL(), row,
-                           is_keyword_hint ? string16() : keyword);
+                           match.keyword);
 }
 
 void OmniboxPopupViewMac::UserPressedOptIn(bool opt_in) {