Move more string_util functions to base namespace.

media/base/mime_util.cc

 // Copyright 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 <map>
 
 #include "base/containers/hash_tables.h"
 #include "base/lazy_instance.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_split.h"
@@ skipping 477 matching lines @@
 //   1 bit: constraint_set3_flag; ignored here.
 //   4 bits: reserved; required to be 0 here.
 //
 // The spec indicates other ways, not implemented here, that a |profile_str|
 // can indicate a baseline conforming decoder is sufficient for decode in Annex
 // A.2.1: "[profile_idc not necessarily 0x42] with constraint_set0_flag set and
 // in which level_idc and constraint_set3_flag represent a level less than or
 // equal to the specified level."
 static bool IsValidH264BaselineProfile(const std::string& profile_str) {
   return (profile_str.size() == 4 && profile_str[0] == '4' &&
-          profile_str[1] == '2' && IsHexDigit(profile_str[2]) &&
+          profile_str[1] == '2' && base::IsHexDigit(profile_str[2]) &&
           profile_str[3] == '0');
 }
 
 static bool IsValidH264Level(const std::string& level_str) {
   uint32 level;
   if (level_str.size() != 2 || !base::HexStringToUInt(level_str, &level))
     return false;
 
   // Valid levels taken from Table A-1 in ISO-14496-10.
   // Essentially |level_str| is toHex(10 * level).
@@ skipping 140 matching lines @@
                       std::vector<std::string>* codecs_out,
                       const bool strip) {
   g_media_mime_util.Get().ParseCodecString(codecs, codecs_out, strip);
 }
 
 void RemoveProprietaryMediaTypesAndCodecsForTests() {
   g_media_mime_util.Get().RemoveProprietaryMediaTypesAndCodecsForTests();
 }
 
 }  // namespace media