Move RemoveChars, ReplaceChars, TrimString, and TruncateUTF8ToByteSize to base namespace.

tools/gn/ninja_script_target_writer.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 "tools/gn/ninja_script_target_writer.h"
 
 #include "base/strings/string_util.h"
 #include "tools/gn/err.h"
 #include "tools/gn/file_template.h"
 #include "tools/gn/string_utils.h"
@@ skipping 54 matching lines @@
 
 std::string NinjaScriptTargetWriter::WriteRuleDefinition(
     const FileTemplate& args_template) {
   // Make a unique name for this rule.
   //
   // Use a unique name for the response file when there are multiple build
   // steps so that they don't stomp on each other. When there are no sources,
   // there will be only one invocation so we can use a simple name.
   std::string target_label = target_->label().GetUserVisibleName(true);
   std::string custom_rule_name(target_label);
-  ReplaceChars(custom_rule_name, ":/()", "_", &custom_rule_name);
+  base::ReplaceChars(custom_rule_name, ":/()", "_", &custom_rule_name);
   custom_rule_name.append("_rule");
 
   if (settings_->IsWin()) {
     // Send through gyp-win-tool and use a response file.
     std::string rspfile = custom_rule_name;
     if (has_sources())
       rspfile += ".$unique_name";
     rspfile += ".rsp";
 
     out_ << "rule " << custom_rule_name << std::endl;
@@ skipping 118 matching lines @@
 }
 
 FileTemplate NinjaScriptTargetWriter::GetDepfileTemplate() const {
   std::vector<std::string> template_args;
   std::string depfile_relative_to_build_dir =
       RemovePrefix(target_->script_values().depfile().value(),
                    settings_->build_settings()->build_dir().value());
   template_args.push_back(depfile_relative_to_build_dir);
   return FileTemplate(template_args);
 }