Use StopChildProcess instead of base::KillProcess to kill a renderer process

extensions/browser/guest_view/extension_options/extension_options_guest.cc

Index: extensions/browser/guest_view/extension_options/extension_options_guest.cc
diff --git a/extensions/browser/guest_view/extension_options/extension_options_guest.cc b/extensions/browser/guest_view/extension_options/extension_options_guest.cc
index 038d8ed4e5cefe797f72a845e886f93e348c2d1f..07c4e2bf6d04477f87b129f0fd780ceb94014cac 100644
--- a/extensions/browser/guest_view/extension_options/extension_options_guest.cc
+++ b/extensions/browser/guest_view/extension_options/extension_options_guest.cc
@@ -240,8 +240,7 @@ void ExtensionOptionsGuest::DidNavigateMainFrame(
     const content::FrameNavigateParams& params) {
   if (attached() && (params.url.GetOrigin() != options_page_.GetOrigin())) {
     base::RecordAction(base::UserMetricsAction("BadMessageTerminate_EOG"));
-    base::KillProcess(
-        web_contents()->GetRenderProcessHost()->GetHandle(),
+    web_contents()->GetRenderProcessHost()->Shutdown(
         content::RESULT_CODE_KILLED_BAD_MESSAGE, false /* wait */);
   }
 }