Move eintr_wrapper.h from base to base/posix

tools/android/forwarder2/common.cc

 // 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.
 
 #include "tools/android/forwarder2/common.h"
 
 #include <errno.h>
 #include <unistd.h>
 
-#include "base/eintr_wrapper.h"
 #include "base/logging.h"
+#include "base/posix/eintr_wrapper.h"
 #include "base/safe_strerror_posix.h"
 
 namespace forwarder2 {
 
 void PError(const char* msg) {
   LOG(ERROR) << msg << ": " << safe_strerror(errno);
 }
 
 void CloseFD(int fd) {
   const int errno_copy = errno;
   if (HANDLE_EINTR(close(fd)) < 0) {
     PError("close");
     errno = errno_copy;
   }
 }
 
 }  // namespace forwarder2