Move more string_util functions to base namespace.

tools/gn/command_args.cc

 // Copyright (c) 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 <stdio.h>
 #include <stdlib.h>
 
 #include <map>
 
 #include "base/command_line.h"
@@ skipping 19 matching lines @@
 namespace commands {
 
 namespace {
 
 const char kSwitchList[] = "list";
 const char kSwitchShort[] = "short";
 
 bool DoesLineBeginWithComment(const base::StringPiece& line) {
   // Skip whitespace.
   size_t i = 0;
-  while (i < line.size() && IsAsciiWhitespace(line[i]))
+  while (i < line.size() && base::IsAsciiWhitespace(line[i]))
     i++;
 
   return i < line.size() && line[i] == '#';
 }
 
 // Returns the offset of the beginning of the line identified by |offset|.
 size_t BackUpToLineBegin(const std::string& data, size_t offset) {
   // Degenerate case of an empty line. Below we'll try to return the
   // character after the newline, but that will be incorrect in this case.
   if (offset == 0 || Tokenizer::IsNewline(data, offset))
@@ skipping 288 matching lines @@
         "Or see \"gn help args\" for more variants.").PrintToStdout();
     return 1;
   }
 
   if (base::CommandLine::ForCurrentProcess()->HasSwitch(kSwitchList))
     return ListArgs(args[0]);
   return EditArgsFile(args[0]);
 }
 
 }  // namespace commands