Move StringToLowerASCII to base namespace

components/translate/core/language_detection/language_detection_util.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 "components/translate/core/language_detection/language_detection_util.h"
 
 #include "base/logging.h"
 #include "base/metrics/field_trial.h"
 #include "base/strings/string_split.h"
 #include "base/strings/string_util.h"
@@ skipping 273 matching lines @@
   base::TrimWhitespaceASCII(*code, base::TRIM_ALL, code);
 
   // An underscore instead of a dash is a frequent mistake.
   size_t underscore_index = code->find('_');
   if (underscore_index != std::string::npos)
     (*code)[underscore_index] = '-';
 
   // Change everything up to a dash to lower-case and everything after to upper.
   size_t dash_index = code->find('-');
   if (dash_index != std::string::npos) {
-    *code = StringToLowerASCII(code->substr(0, dash_index)) +
+    *code = base::StringToLowerASCII(code->substr(0, dash_index)) +
         StringToUpperASCII(code->substr(dash_index));
   } else {
-    *code = StringToLowerASCII(*code);
+    *code = base::StringToLowerASCII(*code);
   }
 }
 
 bool IsValidLanguageCode(const std::string& code) {
   // Roughly check if the language code follows /[a-zA-Z]{2,3}(-[a-zA-Z]{2})?/.
   // TODO(hajimehoshi): How about es-419, which is used as an Accept language?
   std::vector<std::string> chunks;
   base::SplitString(code, '-', &chunks);
 
   if (chunks.size() < 1 || 2 < chunks.size())
@@ skipping 72 matching lines @@
   // distinguish from English, and the language is one of well-known languages
   // which often provide "en-*" meta information mistakenly.
   for (size_t i = 0; i < arraysize(kWellKnownCodesOnWrongConfiguration); ++i) {
     if (cld_language == kWellKnownCodesOnWrongConfiguration[i])
       return true;
   }
   return false;
 }
 
 }  // namespace translate