Remove unused param from search engine extension override helper function.

chrome/browser/extensions/settings_api_helpers.cc

 // Copyright (c) 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.
 
 #include "chrome/browser/extensions/settings_api_helpers.h"
 
 #include "chrome/browser/extensions/api/preference/preference_api.h"
 #include "chrome/common/pref_names.h"
 #include "extensions/browser/extension_registry.h"
 #include "extensions/common/extension_set.h"
@@ skipping 70 matching lines @@
     startup_pages->clear();
     for (std::vector<GURL>::const_iterator it = settings->startup_pages.begin();
          it != settings->startup_pages.end();
          ++it)
       startup_pages->push_back(GURL(*it));
   }
   return extension;
 }
 
 const Extension* OverridesSearchEngine(
-    content::BrowserContext* browser_context,
-    api::manifest_types::ChromeSettingsOverrides::Search_provider*
-        search_provider) {
+    content::BrowserContext* browser_context) {
   const extensions::Extension* extension = NULL;
-  const extensions::SettingsOverrides* settings =
-      FindOverridingExtension(
-          browser_context, BUBBLE_TYPE_SEARCH_ENGINE, &extension);
-  if (settings && search_provider)
-    search_provider = settings->search_engine.get();
+  FindOverridingExtension(
+      browser_context, BUBBLE_TYPE_SEARCH_ENGINE, &extension);
   return extension;
 }
 
 }  // namespace extensions