Upstreaming mechanism to add query refinement to omnibox searches.

chrome/browser/ui/webui/omnibox/omnibox_ui_handler.cc

Index: chrome/browser/ui/webui/omnibox/omnibox_ui_handler.cc
diff --git a/chrome/browser/ui/webui/omnibox/omnibox_ui_handler.cc b/chrome/browser/ui/webui/omnibox/omnibox_ui_handler.cc
index 7c43efba84d183db70c772981879d14203a7da13..87fb3f3208c689ebf46c722be078e3873cab52d6 100644
--- a/chrome/browser/ui/webui/omnibox/omnibox_ui_handler.cc
+++ b/chrome/browser/ui/webui/omnibox/omnibox_ui_handler.cc
@@ -155,6 +155,7 @@ void OmniboxUIHandler::StartOmniboxQuery(const base::ListValue* input) {
   return_val = input->GetBoolean(3, &prefer_keyword);
   DCHECK(return_val);
   string16 empty_string;
+  GURL empty_url;

[Peter Kasting, 2013/03/22 20:20:06]

Nit: Let's nuke |empty_string| and |empty_url| and just pass string16() and
GURL() below.

We can probably also nuke |cursor_position| and rename |cursor_position_int| to
|cursor_position|, since I suspect the compiler will auto-upcast if we provide
an int as an arg in the call.

[beaudoin, 2013/03/22 23:10:43]

Done.

   // Reset the controller.  If we don't do this, then the
   // AutocompleteController might inappropriately set its |minimal_changes|
   // variable (or something else) and some providers will short-circuit
@@ -166,6 +167,7 @@ void OmniboxUIHandler::StartOmniboxQuery(const base::ListValue* input) {
       input_string,
       cursor_position,
       empty_string,  // user's desired tld (top-level domain)
+      empty_url,
       prevent_inline_autocomplete,
       prefer_keyword,
       true,  // allow exact keyword matches