Replace a few typeofs with delctype.

base/posix/eintr_wrapper.h

 // 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.
 
 // This provides a wrapper around system calls which may be interrupted by a
 // signal and return EINTR. See man 7 signal.
 // To prevent long-lasting loops (which would likely be a bug, such as a signal
 // that should be masked) to go unnoticed, there is a limit after which the
 // caller will nonetheless see an EINTR in Debug builds.
 //
 // On Windows, this wrapper macro does nothing.
 //
 // Don't wrap close calls in HANDLE_EINTR. Use IGNORE_EINTR if the return
 // value of close is significant. See http://crbug.com/269623.
 
 #ifndef BASE_POSIX_EINTR_WRAPPER_H_
 #define BASE_POSIX_EINTR_WRAPPER_H_
 
 #include "build/build_config.h"
 
 #if defined(OS_POSIX)
 
 #include <errno.h>
 
 #if defined(NDEBUG)
 
 #define HANDLE_EINTR(x) ({ \
-  typeof(x) eintr_wrapper_result; \
+  decltype(x) eintr_wrapper_result; \
   do { \
     eintr_wrapper_result = (x); \
   } while (eintr_wrapper_result == -1 && errno == EINTR); \
   eintr_wrapper_result; \
 })
 
 #else
 
 #define HANDLE_EINTR(x) ({ \
   int eintr_wrapper_counter = 0; \
-  typeof(x) eintr_wrapper_result; \
+  decltype(x) eintr_wrapper_result; \
   do { \
     eintr_wrapper_result = (x); \
   } while (eintr_wrapper_result == -1 && errno == EINTR && \
            eintr_wrapper_counter++ < 100); \
   eintr_wrapper_result; \
 })
 
 #endif  // NDEBUG
 
 #define IGNORE_EINTR(x) ({ \
-  typeof(x) eintr_wrapper_result; \
+  decltype(x) eintr_wrapper_result; \
   do { \
     eintr_wrapper_result = (x); \
     if (eintr_wrapper_result == -1 && errno == EINTR) { \
       eintr_wrapper_result = 0; \
     } \
   } while (0); \
   eintr_wrapper_result; \
 })
 
 #else
 
 #define HANDLE_EINTR(x) (x)
 #define IGNORE_EINTR(x) (x)
 
 #endif  // OS_POSIX
 
 #endif  // BASE_POSIX_EINTR_WRAPPER_H_