[DevTools] Compatibility with old STL libraries

third_party/WebKit/Source/platform/inspector_protocol/Collections.h

 // 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.
 
 #ifndef Collections_h
 #define Collections_h
 
 #include <cstddef>
 
-#if V8_INSPECTOR_USE_OLD_STL
+#if defined(__APPLE__) && !defined(_LIBCPP_VERSION)
 #include <map>
 #include <set>
 
 namespace blink {
 namespace protocol {
 
 template <class Key, class T> using HashMap = std::map<Key, T>;
 template <class Key> using HashSet = std::set<Key>;
 
 } // namespace protocol
 } // namespace blink
 
 #else
 #include <unordered_map>
 #include <unordered_set>
 
 namespace blink {
 namespace protocol {
 
 template <class Key, class T> using HashMap = std::unordered_map<Key, T>;
 template <class Key> using HashSet = std::unordered_set<Key>;
 
 } // namespace protocol
 } // namespace blink
 
-#endif // V8_INSPECTOR_USE_STL
+#endif // defined(__APPLE__) && !defined(_LIBCPP_VERSION)
 
 // Macro that returns a compile time constant with the length of an array, but gives an error if passed a non-array.
 template<typename T, std::size_t Size> char (&ArrayLengthHelperFunction(T (&)[Size]))[Size];
 // GCC needs some help to deduce a 0 length array.
 #if defined(__GNUC__)
 template<typename T> char (&ArrayLengthHelperFunction(T (&)[0]))[0];
 #endif
 #define PROTOCOL_ARRAY_LENGTH(array) sizeof(::ArrayLengthHelperFunction(array))
 
 #endif // !defined(Collections_h)