Replace ToLower calls to the new format

chrome/browser/importer/in_process_importer_bridge.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/importer/in_process_importer_bridge.h"
 
 #include "base/bind.h"
 #include "base/files/file_util.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 60 matching lines @@
 // FirefoxURLParameterFilter is used to remove parameter mentioning Firefox from
 // the search URL when importing search engines.
 class FirefoxURLParameterFilter : public TemplateURLParser::ParameterFilter {
  public:
   FirefoxURLParameterFilter() {}
   ~FirefoxURLParameterFilter() override {}
 
   // TemplateURLParser::ParameterFilter method.
   bool KeepParameter(const std::string& key,
                      const std::string& value) override {
-    std::string low_value = base::StringToLowerASCII(value);
+    std::string low_value = base::ToLowerASCII(value);
     if (low_value.find("mozilla") != std::string::npos ||
         low_value.find("firefox") != std::string::npos ||
         low_value.find("moz:") != std::string::npos) {
       return false;
     }
     return true;
   }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(FirefoxURLParameterFilter);
@@ skipping 202 matching lines @@
   BrowserThread::PostTask(
       BrowserThread::UI, FROM_HERE,
       base::Bind(&ExternalProcessImporterHost::NotifyImportEnded, host_));
 }
 
 base::string16 InProcessImporterBridge::GetLocalizedString(int message_id) {
   return l10n_util::GetStringUTF16(message_id);
 }
 
 InProcessImporterBridge::~InProcessImporterBridge() {}