Use ChromeAutocompleteSchemeClassifier for Athena on Chrome.

athena/content/public/scheme_classifier_factory.h

+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef ATHENA_CONTENT_PUBLIC_SCHEME_CLASSIFIER_FACTORY_H_
+#define ATHENA_CONTENT_PUBLIC_SCHEME_CLASSIFIER_FACTORY_H_
+
+#include "base/memory/scoped_ptr.h"
+#include "components/omnibox/autocomplete_scheme_classifier.h"
+
+namespace content {
+class BrowserContext;
+}
+
+namespace athena {
+
+// Create the AutocompleteSchemeClassifier implementation of the current
+// environment.
+scoped_ptr<AutocompleteSchemeClassifier> CreateSchemeClassifier(
+    content::BrowserContext* context);
+
+}  // namespace athena
+
+#endif  // ATHENA_CONTENT_PUBLIC_SCHEME_CLASSIFIER_FACTORY_H_