NaCl: Use C++-style comments as per the Chromium style

chrome/app/nacl_fork_delegate_linux.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 "chrome/app/nacl_fork_delegate_linux.h"
 
 #include <signal.h>
 #include <stdlib.h>
 #include <sys/resource.h>
 #include <sys/socket.h>
@@ skipping 11 matching lines @@
 #include "base/third_party/dynamic_annotations/dynamic_annotations.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/nacl_helper_linux.h"
 
 NaClForkDelegate::NaClForkDelegate()
     : status_(kNaClHelperUnused),
       sandboxed_(false),
       fd_(-1) {}
 
-/*
- * Note these need to match up with their counterparts in nacl_helper_linux.c
- * and nacl_helper_bootstrap_linux.c.
- */
+// Note these need to match up with their counterparts in nacl_helper_linux.c
+// and nacl_helper_bootstrap_linux.c.
 const char kNaClHelperReservedAtZero[] =
     "--reserved_at_zero=0xXXXXXXXXXXXXXXXX";
 const char kNaClHelperRDebug[] = "--r_debug=0xXXXXXXXXXXXXXXXX";
 
 void NaClForkDelegate::Init(const bool sandboxed,
                             const int browserdesc,
                             const int sandboxdesc) {
   VLOG(1) << "NaClForkDelegate::Init()";
   int fds[2];
 
@@ skipping 116 matching lines @@
 
 bool NaClForkDelegate::AckChild(const int fd,
                                 const std::string& channel_switch) {
   int nwritten = HANDLE_EINTR(write(fd, channel_switch.c_str(),
                                     channel_switch.length()));
   if (nwritten != static_cast<int>(channel_switch.length())) {
     return false;
   }
   return true;
 }