Moved/renamed EscapeString from visual_studio_writer to XmlEscape in xml_element_writer.

tools/gn/visual_studio_writer.cc

 // Copyright 2016 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/visual_studio_writer.h"
 
 #include <algorithm>
 #include <iterator>
 #include <map>
 #include <memory>
@@ skipping 19 matching lines @@
 #include "tools/gn/variables.h"
 #include "tools/gn/visual_studio_utils.h"
 #include "tools/gn/xml_element_writer.h"
 
 #if defined(OS_WIN)
 #include "base/win/registry.h"
 #endif
 
 namespace {
 
-std::string EscapeString(const std::string& value) {
-  std::string result;
-  for (char c : value) {
-    switch (c) {
-      case '\n':
-        result += "&#10;";
-        break;
-      case '\r':
-        result += "&#13;";
-        break;
-      case '\t':
-        result += "&#9;";
-        break;
-      case '"':
-        result += "&quot;";
-        break;
-      case '<':
-        result += "&lt;";
-        break;
-      case '>':
-        result += "&gt;";
-        break;
-      case '&':
-        result += "&amp;";
-        break;
-      default:
-        result += c;
-    }
-  }
-  return result;
-}
-
 struct SemicolonSeparatedWriter {
   void operator()(const std::string& value, std::ostream& out) const {
-    out << EscapeString(value) + ';';
+    out << XmlEscape(value) + ';';
   }
 };
 
 struct IncludeDirWriter {
   explicit IncludeDirWriter(PathOutput& path_output)
       : path_output_(path_output) {}
   ~IncludeDirWriter() = default;
 
   void operator()(const SourceDir& dir, std::ostream& out) const {
     path_output_.WriteDir(out, dir, PathOutput::DIR_NO_LAST_SLASH);
@@ skipping 814 matching lines @@
   }
 }
 
 std::string VisualStudioWriter::GetNinjaTarget(const Target* target) {
   std::ostringstream ninja_target_out;
   DCHECK(!target->dependency_output_file().value().empty());
   ninja_path_output_.WriteFile(ninja_target_out,
                                target->dependency_output_file());
   return ninja_target_out.str();
 }