Added code so renderer would cleanly exit.

content/browser/child_process_launcher.cc

Index: content/browser/child_process_launcher.cc
diff --git a/content/browser/child_process_launcher.cc b/content/browser/child_process_launcher.cc
index cb7d0315dce12fe3ac9acfad0800e833a78ae163..bfcc61e2296f4649b8288665633f7057821004b4 100644
--- a/content/browser/child_process_launcher.cc
+++ b/content/browser/child_process_launcher.cc
@@ -14,6 +14,7 @@
 #include "base/process_util.h"
 #include "base/synchronization/lock.h"
 #include "base/threading/thread.h"
+#include "chrome/common/chrome_switches.h"
 #include "content/common/chrome_descriptors.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/content_browser_client.h"
@@ -48,12 +49,13 @@ class ChildProcessLauncher::Context
         client_thread_id_(BrowserThread::UI),
         termination_status_(base::TERMINATION_STATUS_NORMAL_TERMINATION),
         exit_code_(content::RESULT_CODE_NORMAL_EXIT),
-        starting_(true),
-        terminate_child_on_shutdown_(true)
+        starting_(true)
 #if defined(OS_POSIX) && !defined(OS_MACOSX) && !defined(OS_ANDROID)
         , zygote_(false)
 #endif
         {
+          terminate_child_on_shutdown_ = !CommandLine::ForCurrentProcess()->
+              HasSwitch(switches::kEnableRendererCleanExit);
   }
 
   void Launch(