Switch to standard integer types in tools/.

tools/gn/path_output_unittest.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 <sstream>
 
 #include "base/files/file_path.h"
+#include "build/build_config.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "tools/gn/output_file.h"
 #include "tools/gn/path_output.h"
 #include "tools/gn/source_dir.h"
 #include "tools/gn/source_file.h"
 
 TEST(PathOutput, Basic) {
   SourceDir build_dir("//out/Debug/");
   base::StringPiece source_root("/source/root");
   PathOutput writer(build_dir, source_root, ESCAPE_NONE);
@@ skipping 256 matching lines @@
       EXPECT_EQ("./", out.str());
     }
     {
       std::ostringstream out;
       root_writer.WriteDir(out, SourceDir("//"),
                            PathOutput::DIR_NO_LAST_SLASH);
       EXPECT_EQ(".", out.str());
     }
   }
 }