Fix presubmit errors caused by updated depot tools

src/d8-posix.cc

 // Copyright 2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 213 matching lines @@
       if (exec_args_[i] == NULL) {
         return;
       }
       delete [] exec_args_[i];
       exec_args_[i] = 0;
     }
   }
   static const unsigned kMaxArgs = 1000;
   char** arg_array() { return exec_args_; }
   char* arg0() { return exec_args_[0]; }
+
  private:
   char* exec_args_[kMaxArgs + 1];
 };
 
 
 // Gets the optional timeouts from the arguments to the system() call.
 static bool GetTimeouts(const Arguments& args,
                         int* read_timeout,
                         int* total_timeout) {
   if (args.Length() > 3) {
@@ skipping 433 matching lines @@
   os_templ->Set(String::New("chdir"), FunctionTemplate::New(ChangeDirectory));
   os_templ->Set(String::New("setenv"), FunctionTemplate::New(SetEnvironment));
   os_templ->Set(String::New("unsetenv"),
                 FunctionTemplate::New(UnsetEnvironment));
   os_templ->Set(String::New("umask"), FunctionTemplate::New(SetUMask));
   os_templ->Set(String::New("mkdirp"), FunctionTemplate::New(MakeDirectory));
   os_templ->Set(String::New("rmdir"), FunctionTemplate::New(RemoveDirectory));
 }
 
 }  // namespace v8