Switch to standard integer types in tools/.

tools/gn/source_dir.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/source_dir.h"
 
 #include "base/logging.h"
+#include "build/build_config.h"
 #include "tools/gn/filesystem_utils.h"
 #include "tools/gn/source_file.h"
 
 namespace {
 
 void AssertValueSourceDirString(const std::string& s) {
   if (!s.empty()) {
 #if defined(OS_WIN)
     DCHECK(s[0] == '/' ||
            (s.size() > 2 && s[0] != '/' && s[1] == ':' && IsSlash(s[2])));
@@ skipping 192 matching lines @@
   // String the double-leading slash for source-relative paths.
   converted.assign(&value_[2], value_.size() - 2);
   return source_root.Append(UTF8ToFilePath(converted))
       .NormalizePathSeparatorsTo('/');
 }
 
 void SourceDir::SwapValue(std::string* v) {
   value_.swap(*v);
   AssertValueSourceDirString(value_);
 }