Convert remaining StringToLowerASCII to ToLowerASCII

extensions/browser/extension_throttle_manager.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 "extensions/browser/extension_throttle_manager.h"
 
 #include "base/logging.h"
 #include "base/metrics/field_trial.h"
 #include "base/metrics/histogram.h"
 #include "base/strings/string_util.h"
@@ skipping 157 matching lines @@
 void ExtensionThrottleManager::OnConnectionTypeChanged(
     net::NetworkChangeNotifier::ConnectionType type) {
   OnNetworkChange();
 }
 
 std::string ExtensionThrottleManager::GetIdFromUrl(const GURL& url) const {
   if (!url.is_valid())
     return url.possibly_invalid_spec();
 
   GURL id = url.ReplaceComponents(url_id_replacements_);
-  return base::StringToLowerASCII(id.spec()).c_str();
+  return base::ToLowerASCII(id.spec());
 }
 
 void ExtensionThrottleManager::GarbageCollectEntriesIfNecessary() {
   requests_since_last_gc_++;
   if (requests_since_last_gc_ < kRequestsBetweenCollecting)
     return;
   requests_since_last_gc_ = 0;
 
   GarbageCollectEntries();
 }
@@ skipping 17 matching lines @@
 void ExtensionThrottleManager::OnNetworkChange() {
   // Remove all entries.  Any entries that in-flight requests have a reference
   // to will live until those requests end, and these entries may be
   // inconsistent with new entries for the same URLs, but since what we
   // want is a clean slate for the new connection type, this is OK.
   url_entries_.clear();
   requests_since_last_gc_ = 0;
 }
 
 }  // namespace extensions