Convert remaining StringToLowerASCII to ToLowerASCII

net/base/filename_util_internal.cc

 // 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.
 
 #include "net/base/filename_util.h"
 
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/strings/string_util.h"
 #include "base/strings/sys_string_conversions.h"
@@ skipping 72 matching lines @@
   // If the URL contains a (possibly empty) query, assume it is a generator, and
   // allow the determined extension to be overwritten.
   *should_overwrite_extension = !decoded_filename.empty() && url.has_query();
 
   return decoded_filename;
 }
 
 // Returns whether the specified extension is automatically integrated into the
 // windows shell.
 bool IsShellIntegratedExtension(const base::FilePath::StringType& extension) {
-  base::FilePath::StringType extension_lower =
-      base::StringToLowerASCII(extension);
+  base::FilePath::StringType extension_lower = base::ToLowerASCII(extension);
 
   // http://msdn.microsoft.com/en-us/library/ms811694.aspx
   // Right-clicking on shortcuts can be magical.
   if ((extension_lower == FILE_PATH_LITERAL("local")) ||
       (extension_lower == FILE_PATH_LITERAL("lnk")))
     return true;
 
   // http://www.juniper.net/security/auto/vulnerabilities/vuln2612.html
   // Files become magical if they end in a CLSID, so block such extensions.
   if (!extension_lower.empty() &&
@@ skipping 173 matching lines @@
   base::FilePath generated_name(
       base::SysWideToNativeMB(base::UTF16ToWide(file_name)));
 #endif
 
   DCHECK(!generated_name.empty());
 
   return generated_name;
 }
 
 }  // namespace net