Use decltype instead of typeof in generate_library_loader.py

tools/generate_library_loader/generate_library_loader.py

 #!/usr/bin/env python
 # Copyright (c) 2012 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.
 
 """
 Creates a library loader (a header and implementation file),
 which is a wrapper for dlopen or direct linking with given library.
 
 The loader makes it possible to have the same client code for both cases,
@@ skipping 43 matching lines @@
 
   // Disallow copy constructor and assignment operator.
   %(class_name)s(const %(class_name)s&);
   void operator=(const %(class_name)s&);
 };
 
 #endif  // %(unique_prefix)s
 """
 
 
-HEADER_MEMBER_TEMPLATE = """  typeof(&::%(function_name)s) %(function_name)s;
+HEADER_MEMBER_TEMPLATE = """  decltype(&::%(function_name)s) %(function_name)s;
 """
 
 
 IMPL_TEMPLATE = """// This is generated file. Do not modify directly.
 // Path to the code generator: %(generator_path)s .
 
 #include "%(generated_header_name)s"
 
 #include <dlfcn.h>
 
@@ skipping 37 matching lines @@
   }
 #endif
   loaded_ = false;
 %(member_cleanup)s
 }
 """
 
 IMPL_MEMBER_INIT_TEMPLATE = """
 #if defined(%(unique_prefix)s_DLOPEN)
   %(function_name)s =
-      reinterpret_cast<typeof(this->%(function_name)s)>(
+      reinterpret_cast<decltype(this->%(function_name)s)>(
           dlsym(library_, "%(function_name)s"));
 #endif
 #if defined(%(unique_prefix)s_DT_NEEDED)
   %(function_name)s = &::%(function_name)s;
 #endif
   if (!%(function_name)s) {
     CleanUp(true);
     return false;
   }
 """
@@ skipping 107 matching lines @@
   impl_file = open(os.path.join(source_tree_root, options.output_cc), 'w')
   try:
     impl_file.write(impl_contents)
   finally:
     impl_file.close()
 
   return 0
 
 if __name__ == '__main__':
   sys.exit(main())