Stop manually calling AddRef/Release for AutocompleteController::providers_

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 ad142a401598ce3b57b0580006ef718f0af8b03d..f74297f4a21021439ced590b8661d398112d500f 100644
--- a/chrome/browser/ui/webui/omnibox/omnibox_ui_handler.cc
+++ b/chrome/browser/ui/webui/omnibox/omnibox_ui_handler.cc
@@ -94,10 +94,10 @@ class TypeConverter<AutocompleteMatchMojoPtr, AutocompleteMatch> {
 
 template <>
 class TypeConverter<AutocompleteResultsForProviderMojoPtr,
-                    AutocompleteProvider*> {
+                    scoped_refptr<AutocompleteProvider> > {
  public:
   static AutocompleteResultsForProviderMojoPtr ConvertFrom(
-      const AutocompleteProvider* input) {
+      const scoped_refptr<AutocompleteProvider>& input) {
     AutocompleteResultsForProviderMojoPtr result(
         AutocompleteResultsForProviderMojo::New());
     result->provider_name = input->GetName();
@@ -140,7 +140,7 @@ void OmniboxUIHandler::OnResultChanged(bool default_match_changed) {
   }
   result->results_by_provider =
       mojo::Array<AutocompleteResultsForProviderMojoPtr>::From(
-          *controller_->providers());
+          controller_->providers());
   client()->HandleNewAutocompleteResult(result.Pass());
 }