Allow child processes to abort quitting.

content/common/child_process.cc

 // Copyright (c) 2011 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 "content/common/child_process.h"
 
 #if defined(OS_POSIX)
 #include <signal.h>  // For SigUSR1Handler below.
 #endif
 
@@ skipping 40 matching lines @@
   return main_thread_.get();
 }
 
 void ChildProcess::set_main_thread(ChildThread* thread) {
   main_thread_.reset(thread);
 }
 
 void ChildProcess::AddRefProcess() {
   DCHECK(!main_thread_.get() ||  // null in unittests.
          MessageLoop::current() == main_thread_->message_loop());
+  if (!ref_count_ && main_thread_.get())
+    main_thread_->AbortProcessShutdown();
   ref_count_++;
 }
 
 void ChildProcess::ReleaseProcess() {
   DCHECK(!main_thread_.get() ||  // null in unittests.
          MessageLoop::current() == main_thread_->message_loop());
   DCHECK(ref_count_);
   DCHECK(child_process_);
   if (--ref_count_)
     return;
@@ skipping 31 matching lines @@
              << ") paused waiting for debugger to attach @ pid";
   // Install a signal handler so that pause can be woken.
   struct sigaction sa;
   memset(&sa, 0, sizeof(sa));
   sa.sa_handler = SigUSR1Handler;
   sigaction(SIGUSR1, &sa, NULL);
 
   pause();
 #endif  // defined(OS_POSIX)
 }