Fix clang build by moving ToLowerASCII into base namespace.

base/string_util.h

 // Copyright (c) 2010 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.
 //
 // This file defines utility functions for working with strings.
 
 #ifndef BASE_STRING_UTIL_H_
 #define BASE_STRING_UTIL_H_
 #pragma once
 
@@ skipping 98 matching lines @@
 //  - 'F', which is not identified by Windows wprintf documentation.
 //  - 'D', 'O', and 'U', which are deprecated and not available on all systems.
 //     Use %ld, %lo, and %lu instead.
 //
 // Note that there is no portable conversion specifier for char data when
 // working with wprintf.
 //
 // This function is intended to be called from base::vswprintf.
 bool IsWprintfFormatPortable(const wchar_t* format);
 
+// ASCII-specific tolower.  The standard library's tolower is locale sensitive,
+// so we don't want to use it here.
+template <class Char> inline Char ToLowerASCII(Char c) {
+  return (c >= 'A' && c <= 'Z') ? (c + ('a' - 'A')) : c;
+}
+
 // Function objects to aid in comparing/searching strings.
 
 template<typename Char> struct CaseInsensitiveCompare {
  public:
   bool operator()(Char x, Char y) const {
     // TODO(darin): Do we really want to do locale sensitive comparisons here?
     // See http://crbug.com/24917
     return tolower(x) == tolower(y);
   }
 };
@@ skipping 139 matching lines @@
 // valid but also if it doesn't contain any non-character codepoint
 // (e.g. U+FFFE). It's done on purpose because all the existing callers want
 // to have the maximum 'discriminating' power from other encodings. If
 // there's a use case for just checking the structural validity, we have to
 // add a new function for that.
 bool IsStringUTF8(const std::string& str);
 bool IsStringASCII(const std::wstring& str);
 bool IsStringASCII(const base::StringPiece& str);
 bool IsStringASCII(const string16& str);
 
-// ASCII-specific tolower.  The standard library's tolower is locale sensitive,
-// so we don't want to use it here.
-template <class Char> inline Char ToLowerASCII(Char c) {
-  return (c >= 'A' && c <= 'Z') ? (c + ('a' - 'A')) : c;
-}
-
 // Converts the elements of the given string.  This version uses a pointer to
 // clearly differentiate it from the non-pointer variant.
 template <class str> inline void StringToLowerASCII(str* s) {
   for (typename str::iterator i = s->begin(); i != s->end(); ++i)
-    *i = ToLowerASCII(*i);
+    *i = base::ToLowerASCII(*i);
 }
 
 template <class str> inline str StringToLowerASCII(const str& s) {
   // for std::string and std::wstring
   str output(s);
   StringToLowerASCII(&output);
   return output;
 }
 
 // ASCII-specific toupper.  The standard library's toupper is locale sensitive,
@@ skipping 280 matching lines @@
 #elif defined(WCHAR_T_IS_UTF32)
   typedef uint32 Unsigned;
 #endif
 };
 template<>
 struct ToUnsigned<short> {
   typedef unsigned short Unsigned;
 };
 
 #endif  // BASE_STRING_UTIL_H_