[Extensions] Code cleanup - const &s

chrome/browser/extensions/extension_special_storage_policy.cc

 // Copyright (c) 2012 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/extension_special_storage_policy.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include "base/bind.h"
@@ skipping 296 matching lines @@
   STLDeleteValues(&cached_results_);
 }
 
 bool ExtensionSpecialStoragePolicy::SpecialCollection::Contains(
     const GURL& origin) {
   return !ExtensionsContaining(origin)->is_empty();
 }
 
 bool ExtensionSpecialStoragePolicy::SpecialCollection::GrantsCapabilitiesTo(
     const GURL& origin) {
-  for (scoped_refptr<const Extension> extension : extensions_) {
+  for (const auto& extension : extensions_) {
     if (extensions::ContentCapabilitiesInfo::Get(extension.get())
             .url_patterns.MatchesURL(origin)) {
       return true;
     }
   }
   return false;
 }
 
 const extensions::ExtensionSet*
 ExtensionSpecialStoragePolicy::SpecialCollection::ExtensionsContaining(
@@ skipping 30 matching lines @@
 }
 
 void ExtensionSpecialStoragePolicy::SpecialCollection::Clear() {
   ClearCache();
   extensions_.Clear();
 }
 
 void ExtensionSpecialStoragePolicy::SpecialCollection::ClearCache() {
   STLDeleteValues(&cached_results_);
 }