Replace ToLower calls to the new format

chrome/common/extensions/api/file_browser_handlers/file_browser_handler.cc

 // Copyright 2013 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/common/extensions/api/file_browser_handlers/file_browser_handler.h"
 
 #include "base/logging.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 181 matching lines @@
       *error = base::ASCIIToUTF16(errors::kInvalidFileFiltersList);
       return NULL;
     }
     for (size_t i = 0; i < file_filters->GetSize(); ++i) {
       std::string filter;
       if (!file_filters->GetString(i, &filter)) {
         *error = extensions::ErrorUtils::FormatErrorMessageUTF16(
             errors::kInvalidFileFilterValue, base::IntToString(i));
         return NULL;
       }
-      base::StringToLowerASCII(&filter);
+      filter = base::ToLowerASCII(filter);
       if (!base::StartsWith(filter, std::string(url::kFileSystemScheme) + ':',
                             base::CompareCase::SENSITIVE)) {
         *error = extensions::ErrorUtils::FormatErrorMessageUTF16(
             errors::kInvalidURLPatternError, filter);
         return NULL;
       }
       // The user inputs filesystem:*; we don't actually implement scheme
       // wildcards in URLPattern, so transform to what will match correctly.
       filter.replace(0, 11, "chrome-extension://*/");
       URLPattern pattern(URLPattern::SCHEME_EXTENSION);
@@ skipping 85 matching lines @@
     return false;  // Failed to parse file browser actions definition.
   }
 
   extension->SetManifestData(keys::kFileBrowserHandlers, info.release());
   return true;
 }
 
 const std::vector<std::string> FileBrowserHandlerParser::Keys() const {
   return SingleKey(keys::kFileBrowserHandlers);
 }