[Android]: Replace calls to getdtablesize with sysconf(_SC_OPEN_MAX) in tools.

base/test/multiprocess_test_android.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 "base/posix/global_descriptors.h"
 #include "base/test/multiprocess_test.h"
 
 #include <unistd.h>
 
 #include "base/containers/hash_tables.h"
@@ skipping 28 matching lines @@
   }
   // Child process.
   std::hash_set<int> fds_to_keep_open;
   for (FileHandleMappingVector::const_iterator it = fds_to_remap->begin();
        it != fds_to_remap->end(); ++it) {
     fds_to_keep_open.insert(it->first);
   }
   // Keep standard FDs (stdin, stdout, stderr, etc.) open since this
   // is not meant to spawn a daemon.
   int base = GlobalDescriptors::kBaseDescriptor;
-  for (int fd = base; fd < getdtablesize(); ++fd) {
+  for (int fd = base; fd < sysconf(_SC_OPEN_MAX); ++fd) {
     if (fds_to_keep_open.find(fd) == fds_to_keep_open.end()) {
       close(fd);
     }
   }
   for (FileHandleMappingVector::const_iterator it = fds_to_remap->begin();
        it != fds_to_remap->end(); ++it) {
     int old_fd = it->first;
     int new_fd = it->second;
     if (dup2(old_fd, new_fd) < 0) {
       PLOG(FATAL) << "dup2";
     }
     close(old_fd);
   }
   _exit(multi_process_function_list::InvokeChildProcessTest(procname));
   return 0;
 }
 
 }  // namespace base