Move StringToUpperASCII and LowerCaseEqualsASCII to the base namespace

media/base/audio_video_metadata_extractor.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 "media/base/audio_video_metadata_extractor.h"
 
 #include "base/bind.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "base/time/time.h"
 #include "media/ffmpeg/ffmpeg_common.h"
 #include "media/filters/blocking_url_protocol.h"
 #include "media/filters/ffmpeg_glue.h"
 
 namespace media {
 
 namespace {
 
 void OnError(bool* succeeded) {
   *succeeded = false;
 }
 
 // Returns true if the |tag| matches |expected_key|.
 bool ExtractString(AVDictionaryEntry* tag, const char* expected_key,
                    std::string* destination) {
-  if (!LowerCaseEqualsASCII(std::string(tag->key), expected_key))
+  if (!base::LowerCaseEqualsASCII(tag->key, expected_key))
     return false;
 
   if (destination->empty())
     *destination = tag->value;
 
   return true;
 }
 
 // Returns true if the |tag| matches |expected_key|.
 bool ExtractInt(AVDictionaryEntry* tag, const char* expected_key,
                 int* destination) {
-  if (!LowerCaseEqualsASCII(std::string(tag->key), expected_key))
+  if (!base::LowerCaseEqualsASCII(tag->key, expected_key))
     return false;
 
   int temporary = -1;
   if (*destination < 0 && base::StringToInt(tag->value, &temporary) &&
       temporary >= 0) {
     *destination = temporary;
   }
 
   return true;
 }
@@ skipping 203 matching lines @@
     if (ExtractString(tag, "encoder", &encoder_)) continue;
     if (ExtractString(tag, "encoded_by", &encoded_by_)) continue;
     if (ExtractString(tag, "genre", &genre_)) continue;
     if (ExtractString(tag, "language", &language_)) continue;
     if (ExtractString(tag, "title", &title_)) continue;
     if (ExtractInt(tag, "track", &track_)) continue;
   }
 }
 
 }  // namespace media