Switch to standard integer types in tools/.

tools/gn/operators_unittest.cc

Index: tools/gn/operators_unittest.cc
diff --git a/tools/gn/operators_unittest.cc b/tools/gn/operators_unittest.cc
index b5b3b0201471895b5e055bf4c455150c7bef5678..20e344f1aed24ba4b04fc6fe72602af97a45d0ea 100644
--- a/tools/gn/operators_unittest.cc
+++ b/tools/gn/operators_unittest.cc
@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include <stdint.h>
+
 #include "testing/gtest/include/gtest/gtest.h"
 #include "tools/gn/operators.h"
 #include "tools/gn/parse_tree.h"
@@ -10,7 +12,7 @@
 
 namespace {
 
-bool IsValueIntegerEqualing(const Value& v, int64 i) {
+bool IsValueIntegerEqualing(const Value& v, int64_t i) {
   if (v.type() != Value::INTEGER)
     return false;
   return v.int_value() == i;