Use a direct include of utf_string_conversions.h in android_webview/, apps/, ash/, base/.

base/strings/string_number_conversions.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 "base/strings/string_number_conversions.h"
 
 #include <ctype.h>
 #include <errno.h>
 #include <stdlib.h>
 #include <wctype.h>
 
 #include <limits>
 
 #include "base/logging.h"
 #include "base/scoped_clear_errno.h"
+#include "base/strings/utf_string_conversions.h"
 #include "base/third_party/dmg_fp/dmg_fp.h"
-#include "base/utf_string_conversions.h"
 
 namespace base {
 
 namespace {
 
 template <typename STR, typename INT, typename UINT, bool NEG>
 struct IntToStringT {
   // This is to avoid a compiler warning about unary minus on unsigned type.
   // For example, say you had the following code:
   //   template <typename INT>
@@ skipping 479 matching lines @@
 bool HexStringToUInt64(const StringPiece& input, uint64* output) {
   return IteratorRangeToNumber<HexIteratorRangeToUInt64Traits>::Invoke(
       input.begin(), input.end(), output);
 }
 
 bool HexStringToBytes(const std::string& input, std::vector<uint8>* output) {
   return HexStringToBytesT(input, output);
 }
 
 }  // namespace base