Remove UTF string conversion functions from the global namespace.

base/strings/string_util.cc

 // Copyright 2013 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_util.h"
 
 #include <ctype.h>
 #include <errno.h>
 #include <math.h>
 #include <stdarg.h>
@@ skipping 514 matching lines @@
 
   char buf[64];
   if (bytes != 0 && dimension > 0 && unit_amount < 100) {
     base::snprintf(buf, arraysize(buf), "%.1lf%s", unit_amount,
                    kByteStringsUnlocalized[dimension]);
   } else {
     base::snprintf(buf, arraysize(buf), "%.0lf%s", unit_amount,
                    kByteStringsUnlocalized[dimension]);
   }
 
-  return ASCIIToUTF16(buf);
+  return base::ASCIIToUTF16(buf);
 }
 
 template<class StringType>
 void DoReplaceSubstringsAfterOffset(StringType* str,
                                     typename StringType::size_type start_offset,
                                     const StringType& find_this,
                                     const StringType& replace_with,
                                     bool replace_all) {
   if ((start_offset == StringType::npos) || (start_offset >= str->length()))
     return;
@@ skipping 382 matching lines @@
 }
 
 }  // namespace
 
 size_t base::strlcpy(char* dst, const char* src, size_t dst_size) {
   return lcpyT<char>(dst, src, dst_size);
 }
 size_t base::wcslcpy(wchar_t* dst, const wchar_t* src, size_t dst_size) {
   return lcpyT<wchar_t>(dst, src, dst_size);
 }