Linux: tear down Zygote at browser shutdown.

content/browser/browser_main_loop.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 "content/browser/browser_main_loop.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
 #include "base/file_util.h"
@@ skipping 765 matching lines @@
   }
 
 #if defined(USE_AURA)
   {
     TRACE_EVENT0("shutdown",
                  "BrowserMainLoop::Subsystem:ImageTransportFactory");
     ImageTransportFactory::Terminate();
   }
 #endif
 
+#if defined(OS_POSIX) && !defined(OS_MACOSX) && !defined(OS_ANDROID)
+  ZygoteHostImpl::GetInstance()->TearDownAfterLastChild();
+#endif  // defined(OS_POSIX) && !defined(OS_MACOSX) && !defined(OS_ANDROID)
+
   // The device monitors are using |system_monitor_| as dependency, so delete
   // them before |system_monitor_| goes away.
   // On Mac and windows, the monitor needs to be destroyed on the same thread
   // as they were created. On Linux, the monitor will be deleted when IO thread
   // goes away.
 #if defined(OS_WIN)
   system_message_window_.reset();
 #elif defined(OS_MACOSX)
   device_monitor_mac_.reset();
 #endif
@@ skipping 317 matching lines @@
       base::TimeDelta::FromSeconds(delay_secs));
 }
 
 void BrowserMainLoop::EndStartupTracing(const base::FilePath& trace_file) {
   is_tracing_startup_ = false;
   TracingController::GetInstance()->DisableRecording(
       trace_file, TracingController::TracingFileResultCallback());
 }
 
 }  // namespace content